diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c
index 6bb94473f19..777db4e9522 100644
--- a/arch/sandbox/cpu/start.c
+++ b/arch/sandbox/cpu/start.c
@@ -390,6 +390,16 @@ static int sandbox_cmdline_cb_select_unittests(struct sandbox_state *state,
 }
 SANDBOX_CMDLINE_OPT_SHORT(select_unittests, 'k', 1, "Select unit tests to run");
 
+static int sandbox_cmdline_cb_signals(struct sandbox_state *state,
+				      const char *arg)
+{
+	state->handle_signals = true;
+
+	return 0;
+}
+SANDBOX_CMDLINE_OPT_SHORT(signals, 'S', 0,
+			  "Handle signals (such as SIGSEGV) in sandbox");
+
 static void setup_ram_buf(struct sandbox_state *state)
 {
 	/* Zero the RAM buffer if we didn't read it, to keep valgrind happy */
@@ -426,9 +436,6 @@ void sandbox_reset(void)
 	if (state_uninit())
 		os_exit(2);
 
-	if (dm_uninit())
-		os_exit(2);
-
 	/* Restart U-Boot */
 	os_relaunch(os_argv);
 }
@@ -443,6 +450,14 @@ int main(int argc, char *argv[])
 
 	text_base = os_find_text_base();
 
+	/*
+	 * This must be the first invocation of os_malloc() to have
+	 * state->ram_buf in the low 4 GiB.
+	 */
+	ret = state_init();
+	if (ret)
+		goto err;
+
 	/*
 	 * Copy argv[] so that we can pass the arguments in the original
 	 * sequence when resetting the sandbox.
@@ -457,10 +472,6 @@ int main(int argc, char *argv[])
 	gd = &data;
 	gd->arch.text_base = text_base;
 
-	ret = state_init();
-	if (ret)
-		goto err;
-
 	state = state_get_current();
 	if (os_parse_args(state, argc, argv))
 		return 1;
@@ -476,9 +487,11 @@ int main(int argc, char *argv[])
 	if (ret)
 		goto err;
 
-	ret = os_setup_signal_handlers();
-	if (ret)
-		goto err;
+	if (state->handle_signals) {
+		ret = os_setup_signal_handlers();
+		if (ret)
+			goto err;
+	}
 
 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 	gd->malloc_base = CONFIG_MALLOC_F_ADDR;
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 8e7eaf2d150..d85bb46ceba 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -139,6 +139,12 @@
 				size = <0x10000>;
 			};
 		};
+
+		cros_ec_pwm: cros-ec-pwm {
+			compatible = "google,cros-ec-pwm";
+			#pwm-cells = <1>;
+		};
+
 	};
 
 	dsi_host: dsi_host {
diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h
index bca13069824..1c4c571e28d 100644
--- a/arch/sandbox/include/asm/state.h
+++ b/arch/sandbox/include/asm/state.h
@@ -93,6 +93,7 @@ struct sandbox_state {
 	bool ram_buf_read;		/* true if we read the RAM buffer */
 	bool run_unittests;		/* Run unit tests */
 	const char *select_unittests;	/* Unit test to run */
+	bool handle_signals;		/* Handle signals within sandbox */
 
 	/* Pointer to information for each SPI bus/cs */
 	struct sandbox_spi_info spi[CONFIG_SANDBOX_SPI_MAX_BUS]
diff --git a/arch/sandbox/include/asm/test.h b/arch/sandbox/include/asm/test.h
index 1cb960ac240..dab1a4ea01b 100644
--- a/arch/sandbox/include/asm/test.h
+++ b/arch/sandbox/include/asm/test.h
@@ -275,4 +275,14 @@ void sandbox_set_enable_memio(bool enable);
  */
 void sandbox_cros_ec_set_test_flags(struct udevice *dev, uint flags);
 
+/**
+ * sandbox_cros_ec_get_pwm_duty() - Get EC PWM config for testing purposes
+ *
+ * @dev: Device to check
+ * @index: PWM channel index
+ * @duty: Current duty cycle in 0..EC_PWM_MAX_DUTY range.
+ * @return 0 if OK, -ENOSPC if the PWM number is invalid
+ */
+int sandbox_cros_ec_get_pwm_duty(struct udevice *dev, uint index, uint *duty);
+
 #endif
diff --git a/common/board_f.c b/common/board_f.c
index 203e965799e..c1b8e63e560 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -265,7 +265,9 @@ static int setup_mon_len(void)
 {
 #if defined(__ARM__) || defined(__MICROBLAZE__)
 	gd->mon_len = (ulong)&__bss_end - (ulong)_start;
-#elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
+#elif defined(CONFIG_SANDBOX)
+	gd->mon_len = 0;
+#elif defined(CONFIG_EFI_APP)
 	gd->mon_len = (ulong)&_end - (ulong)_init;
 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
 	gd->mon_len = CONFIG_SYS_MONITOR_LEN;
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index a8bb5607245..674b6603910 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -188,6 +188,7 @@ CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_DM_PWM=y
+CONFIG_PWM_CROS_EC=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
 CONFIG_REMOTEPROC_SANDBOX=y
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index f16e2d5d23d..df14506b09c 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -226,6 +226,7 @@ CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_DM_REGULATOR_SCMI=y
 CONFIG_DM_PWM=y
+CONFIG_PWM_CROS_EC=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
 CONFIG_REMOTEPROC_SANDBOX=y
diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig
index 1c39a545c85..aaa6720cf9b 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -165,6 +165,7 @@ CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_DM_PWM=y
+CONFIG_PWM_CROS_EC=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
 CONFIG_REMOTEPROC_SANDBOX=y
diff --git a/configs/sandbox_noinst_defconfig b/configs/sandbox_noinst_defconfig
index 9f415cd8756..3dc3a361543 100644
--- a/configs/sandbox_noinst_defconfig
+++ b/configs/sandbox_noinst_defconfig
@@ -181,6 +181,7 @@ CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_DM_PWM=y
+CONFIG_PWM_CROS_EC=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
 CONFIG_REMOTEPROC_SANDBOX=y
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 8bc1373ec31..c7d15de9391 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -183,6 +183,7 @@ CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_DM_PWM=y
+CONFIG_PWM_CROS_EC=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
 CONFIG_REMOTEPROC_SANDBOX=y
diff --git a/drivers/adc/adc-uclass.c b/drivers/adc/adc-uclass.c
index 8781f32855f..67137ffb341 100644
--- a/drivers/adc/adc-uclass.c
+++ b/drivers/adc/adc-uclass.c
@@ -4,6 +4,8 @@
  * Przemyslaw Marczak <p.marczak@samsung.com>
  */
 
+#define LOG_CATEGORY UCLASS_ADC
+
 #include <common.h>
 #include <errno.h>
 #include <div64.h>
diff --git a/drivers/ata/ahci-uclass.c b/drivers/ata/ahci-uclass.c
index c4c7a03fe74..d398b50b9a1 100644
--- a/drivers/ata/ahci-uclass.c
+++ b/drivers/ata/ahci-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_AHCI
+
 #include <common.h>
 #include <ahci.h>
 #include <dm.h>
diff --git a/drivers/axi/axi-emul-uclass.c b/drivers/axi/axi-emul-uclass.c
index b28351f1adb..793336d8c47 100644
--- a/drivers/axi/axi-emul-uclass.c
+++ b/drivers/axi/axi-emul-uclass.c
@@ -4,6 +4,8 @@
  * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
  */
 
+#define LOG_CATEGORY UCLASS_AXI_EMUL
+
 #include <common.h>
 #include <axi.h>
 #include <dm.h>
diff --git a/drivers/axi/axi-uclass.c b/drivers/axi/axi-uclass.c
index af8acd9f88b..afb4844ecbd 100644
--- a/drivers/axi/axi-uclass.c
+++ b/drivers/axi/axi-uclass.c
@@ -4,6 +4,8 @@
  * Mario Six,  Guntermann & Drunck GmbH, mario.six@gdsys.cc
  */
 
+#define LOG_CATEGORY UCLASS_AXI
+
 #include <common.h>
 #include <dm.h>
 #include <axi.h>
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index d0d91db540b..dfc0d469702 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_BLK
+
 #include <common.h>
 #include <blk.h>
 #include <dm.h>
diff --git a/drivers/block/ide.c b/drivers/block/ide.c
index 862a85bc87b..c99076c6f45 100644
--- a/drivers/block/ide.c
+++ b/drivers/block/ide.c
@@ -4,6 +4,8 @@
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */
 
+#define LOG_CATEGORY UCLASS_IDE
+
 #include <common.h>
 #include <ata.h>
 #include <blk.h>
diff --git a/drivers/bootcount/bootcount-uclass.c b/drivers/bootcount/bootcount-uclass.c
index 34ac08d59a6..c747c9ab276 100644
--- a/drivers/bootcount/bootcount-uclass.c
+++ b/drivers/bootcount/bootcount-uclass.c
@@ -3,6 +3,8 @@
  * (C) Copyright 2018 Theobroma Systems Design und Consulting GmbH
  */
 
+#define LOG_CATEGORY UCLASS_BOOTCOUNT
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/button/button-uclass.c b/drivers/button/button-uclass.c
index e06d3eb7da5..e33ed7d01d1 100644
--- a/drivers/button/button-uclass.c
+++ b/drivers/button/button-uclass.c
@@ -5,6 +5,8 @@
  * Based on led-uclass.c
  */
 
+#define LOG_CATEGORY UCLASS_BUTTON
+
 #include <common.h>
 #include <button.h>
 #include <dm.h>
diff --git a/drivers/cache/cache-uclass.c b/drivers/cache/cache-uclass.c
index 3b20a10f087..0c13dbdb75c 100644
--- a/drivers/cache/cache-uclass.c
+++ b/drivers/cache/cache-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2019 Intel Corporation <www.intel.com>
  */
 
+#define LOG_CATEGORY UCLASS_CACHE
+
 #include <common.h>
 #include <cache.h>
 #include <dm.h>
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 14254212ca7..f049e36380f 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -6,6 +6,8 @@
  * Copyright (c) 2018, Theobroma Systems Design und Consulting GmbH
  */
 
+#define LOG_CATEGORY UCLASS_CLK
+
 #include <common.h>
 #include <clk.h>
 #include <clk-uclass.h>
diff --git a/drivers/core/root.c b/drivers/core/root.c
index fe0562cd6f6..78eee082c95 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -6,6 +6,8 @@
  * Pavel Herrmann <morpheus.ibis@gmail.com>
  */
 
+#define LOG_CATEGORY UCLASS_ROOT
+
 #include <common.h>
 #include <errno.h>
 #include <fdtdec.h>
@@ -111,9 +113,6 @@ void fix_uclass(void)
 			entry->init += gd->reloc_off;
 		if (entry->destroy)
 			entry->destroy += gd->reloc_off;
-		/* FIXME maybe also need to fix these ops */
-		if (entry->ops)
-			entry->ops += gd->reloc_off;
 	}
 }
 
diff --git a/drivers/core/simple-bus.c b/drivers/core/simple-bus.c
index 18f52d26df2..abc55c21719 100644
--- a/drivers/core/simple-bus.c
+++ b/drivers/core/simple-bus.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_SIMPLE_BUS
+
 #include <common.h>
 #include <asm/global_data.h>
 #include <dm.h>
diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c
index 1c338bad9a1..a5cda6a62c4 100644
--- a/drivers/cpu/cpu-uclass.c
+++ b/drivers/cpu/cpu-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_CPU
+
 #include <common.h>
 #include <cpu.h>
 #include <dm.h>
diff --git a/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c
index f5ae35e1325..6a4d235d57b 100644
--- a/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c
+++ b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c
@@ -4,6 +4,8 @@
  * Author: Ruchika Gupta <ruchika.gupta@freescale.com>
  */
 
+#define LOG_CATEGORY UCLASS_MOD_EXP
+
 #include <common.h>
 #include <dm.h>
 #include <asm/global_data.h>
diff --git a/drivers/dma/dma-uclass.c b/drivers/dma/dma-uclass.c
index a93b0b7ba08..652ddbb62b8 100644
--- a/drivers/dma/dma-uclass.c
+++ b/drivers/dma/dma-uclass.c
@@ -9,6 +9,8 @@
  * Author: Mugunthan V N <mugunthanvnm@ti.com>
  */
 
+#define LOG_CATEGORY UCLASS_DMA
+
 #include <common.h>
 #include <cpu_func.h>
 #include <dm.h>
diff --git a/drivers/firmware/firmware-uclass.c b/drivers/firmware/firmware-uclass.c
index 7fcd7fb9047..bfaf283eed5 100644
--- a/drivers/firmware/firmware-uclass.c
+++ b/drivers/firmware/firmware-uclass.c
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 
+#define LOG_CATEGORY UCLASS_FIRMWARE
+
 #include <common.h>
 #include <dm.h>
 
diff --git a/drivers/hwspinlock/hwspinlock-uclass.c b/drivers/hwspinlock/hwspinlock-uclass.c
index 8997243421c..cbe72360117 100644
--- a/drivers/hwspinlock/hwspinlock-uclass.c
+++ b/drivers/hwspinlock/hwspinlock-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
  */
 
+#define LOG_CATEGORY UCLASS_HWSPINLOCK
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/i2c/i2c-emul-uclass.c b/drivers/i2c/i2c-emul-uclass.c
index 7917b63c55b..aeec6aa9fa6 100644
--- a/drivers/i2c/i2c-emul-uclass.c
+++ b/drivers/i2c/i2c-emul-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_I2C_EMUL
+
 #include <common.h>
 #include <dm.h>
 #include <i2c.h>
diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c
index be56785217c..04c88503a2f 100644
--- a/drivers/i2c/i2c-uclass.c
+++ b/drivers/i2c/i2c-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_I2C
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/i2c/muxes/i2c-mux-uclass.c b/drivers/i2c/muxes/i2c-mux-uclass.c
index dbca409ee3a..a5d1bb0576d 100644
--- a/drivers/i2c/muxes/i2c-mux-uclass.c
+++ b/drivers/i2c/muxes/i2c-mux-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_I2C_MUX
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/input/keyboard-uclass.c b/drivers/input/keyboard-uclass.c
index 2c6680337d9..aefc8e825e2 100644
--- a/drivers/input/keyboard-uclass.c
+++ b/drivers/input/keyboard-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2015 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_KEYBOARD
+
 #include <common.h>
 #include <dm.h>
 #include <keyboard.h>
diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c
index e15a2967ffe..7e298dbb06f 100644
--- a/drivers/led/led-uclass.c
+++ b/drivers/led/led-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_LED
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/mailbox/mailbox-uclass.c b/drivers/mailbox/mailbox-uclass.c
index c972d846089..01c9e75fa5b 100644
--- a/drivers/mailbox/mailbox-uclass.c
+++ b/drivers/mailbox/mailbox-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2016, NVIDIA CORPORATION.
  */
 
+#define LOG_CATEGORY UCLASS_MAILBOX
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c
index bc01df0904e..db5e3b0f51a 100644
--- a/drivers/misc/cros_ec_sandbox.c
+++ b/drivers/misc/cros_ec_sandbox.c
@@ -64,6 +64,7 @@ struct ec_keymatrix_entry {
 
 enum {
 	VSTORE_SLOT_COUNT	= 4,
+	PWM_CHANNEL_COUNT	= 4,
 };
 
 struct vstore_slot {
@@ -71,6 +72,10 @@ struct vstore_slot {
 	u8 data[EC_VSTORE_SLOT_SIZE];
 };
 
+struct ec_pwm_channel {
+	uint duty;	/* not ns, EC_PWM_MAX_DUTY = 100% */
+};
+
 /**
  * struct ec_state - Information about the EC state
  *
@@ -85,6 +90,7 @@ struct vstore_slot {
  * @recovery_req: Keyboard recovery requested
  * @test_flags: Flags that control behaviour for tests
  * @slot_locked: Locked vstore slots (mask)
+ * @pwm: Information per PWM channel
  */
 struct ec_state {
 	u8 vbnv_context[EC_VBNV_BLOCK_SIZE_V2];
@@ -98,6 +104,7 @@ struct ec_state {
 	bool recovery_req;
 	uint test_flags;
 	struct vstore_slot slot[VSTORE_SLOT_COUNT];
+	struct ec_pwm_channel pwm[PWM_CHANNEL_COUNT];
 } s_state, *g_state;
 
 /**
@@ -554,6 +561,33 @@ static int process_cmd(struct ec_state *ec,
 		len = sizeof(*resp);
 		break;
 	}
+	case EC_CMD_PWM_GET_DUTY: {
+		const struct ec_params_pwm_get_duty *req = req_data;
+		struct ec_response_pwm_get_duty *resp = resp_data;
+		struct ec_pwm_channel *pwm;
+
+		if (req->pwm_type != EC_PWM_TYPE_GENERIC)
+			return -EINVAL;
+		if (req->index >= PWM_CHANNEL_COUNT)
+			return -EINVAL;
+		pwm = &ec->pwm[req->index];
+		resp->duty = pwm->duty;
+		len = sizeof(*resp);
+		break;
+	}
+	case EC_CMD_PWM_SET_DUTY: {
+		const struct ec_params_pwm_set_duty *req = req_data;
+		struct ec_pwm_channel *pwm;
+
+		if (req->pwm_type != EC_PWM_TYPE_GENERIC)
+			return -EINVAL;
+		if (req->index >= PWM_CHANNEL_COUNT)
+			return -EINVAL;
+		pwm = &ec->pwm[req->index];
+		pwm->duty = req->duty;
+		len = 0;
+		break;
+	}
 	default:
 		printf("   ** Unknown EC command %#02x\n", req_hdr->command);
 		return -1;
@@ -619,6 +653,19 @@ void sandbox_cros_ec_set_test_flags(struct udevice *dev, uint flags)
 	ec->test_flags = flags;
 }
 
+int sandbox_cros_ec_get_pwm_duty(struct udevice *dev, uint index, uint *duty)
+{
+	struct ec_state *ec = dev_get_priv(dev);
+	struct ec_pwm_channel *pwm;
+
+	if (index >= PWM_CHANNEL_COUNT)
+		return -ENOSPC;
+	pwm = &ec->pwm[index];
+	*duty = pwm->duty;
+
+	return 0;
+}
+
 int cros_ec_probe(struct udevice *dev)
 {
 	struct ec_state *ec = dev_get_priv(dev);
diff --git a/drivers/misc/fs_loader.c b/drivers/misc/fs_loader.c
index e77b3af770e..0139bd66ba7 100644
--- a/drivers/misc/fs_loader.c
+++ b/drivers/misc/fs_loader.c
@@ -3,6 +3,9 @@
  * Copyright (C) 2018-2019 Intel Corporation <www.intel.com>
  *
  */
+
+#define LOG_CATEGORY UCLASS_FS_FIRMWARE_LOADER
+
 #include <common.h>
 #include <dm.h>
 #include <env.h>
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index 5926c91a2ec..3b249842f8b 100644
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_I2C_EEPROM
+
 #include <common.h>
 #include <eeprom.h>
 #include <linux/delay.h>
diff --git a/drivers/misc/misc-uclass.c b/drivers/misc/misc-uclass.c
index 55381edc980..72720b0e590 100644
--- a/drivers/misc/misc-uclass.c
+++ b/drivers/misc/misc-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
  */
 
+#define LOG_CATEGORY UCLASS_MISC
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/misc/p2sb-uclass.c b/drivers/misc/p2sb-uclass.c
index ac2852559f5..94d273de9b3 100644
--- a/drivers/misc/p2sb-uclass.c
+++ b/drivers/misc/p2sb-uclass.c
@@ -6,6 +6,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_P2SB
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/misc/pwrseq-uclass.c b/drivers/misc/pwrseq-uclass.c
index c8f6c46069b..a0f24e1bf3a 100644
--- a/drivers/misc/pwrseq-uclass.c
+++ b/drivers/misc/pwrseq-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2015 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_PWRSEQ
+
 #include <common.h>
 #include <dm.h>
 #include <pwrseq.h>
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
index 579d7a1406b..0e13238c7e7 100644
--- a/drivers/mmc/mmc-uclass.c
+++ b/drivers/mmc/mmc-uclass.c
@@ -5,6 +5,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_MMC
+
 #include <common.h>
 #include <log.h>
 #include <mmc.h>
diff --git a/drivers/mtd/mtd-uclass.c b/drivers/mtd/mtd-uclass.c
index 4ab84de5531..0743fe7af9f 100644
--- a/drivers/mtd/mtd-uclass.c
+++ b/drivers/mtd/mtd-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
  */
 
+#define LOG_CATEGORY UCLASS_MTD
+
 #include <common.h>
 #include <dm.h>
 #include <dm/device-internal.h>
diff --git a/drivers/mtd/spi/sf-uclass.c b/drivers/mtd/spi/sf-uclass.c
index cfce00ef548..63d16291ff1 100644
--- a/drivers/mtd/spi/sf-uclass.c
+++ b/drivers/mtd/spi/sf-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_SPI_FLASH
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/mux/mux-uclass.c b/drivers/mux/mux-uclass.c
index 6d28dbe4d14..91842c5539f 100644
--- a/drivers/mux/mux-uclass.c
+++ b/drivers/mux/mux-uclass.c
@@ -11,6 +11,8 @@
  * Jean-Jacques Hiblot <jjhiblot@ti.com>
  */
 
+#define LOG_CATEGORY UCLASS_MUX
+
 #include <common.h>
 #include <dm.h>
 #include <mux-internal.h>
diff --git a/drivers/nvme/nvme-uclass.c b/drivers/nvme/nvme-uclass.c
index 610166d76ea..239a92abba6 100644
--- a/drivers/nvme/nvme-uclass.c
+++ b/drivers/nvme/nvme-uclass.c
@@ -4,6 +4,8 @@
  * Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
  */
 
+#define LOG_CATEGORY UCLASS_NVME
+
 #include <common.h>
 #include <dm.h>
 
diff --git a/drivers/pch/pch-uclass.c b/drivers/pch/pch-uclass.c
index ad4906aa58b..7bc2372e96d 100644
--- a/drivers/pch/pch-uclass.c
+++ b/drivers/pch/pch-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_PCH
+
 #include <common.h>
 #include <dm.h>
 #include <pch.h>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index afe4f1974aa..cb9aa818359 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_PCI
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/pci_endpoint/pci_ep-uclass.c b/drivers/pci_endpoint/pci_ep-uclass.c
index 5555cf5a8c9..6ee4cfbdb4a 100644
--- a/drivers/pci_endpoint/pci_ep-uclass.c
+++ b/drivers/pci_endpoint/pci_ep-uclass.c
@@ -9,6 +9,8 @@
  * Written by Ramon Fried <ramon.fried@gmail.com>
  */
 
+#define LOG_CATEGORY UCLASS_PCI_EP
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c
index 43ffbcee0f0..59683a080cd 100644
--- a/drivers/phy/phy-uclass.c
+++ b/drivers/phy/phy-uclass.c
@@ -4,6 +4,8 @@
  * Written by Jean-Jacques Hiblot  <jjhiblot@ti.com>
  */
 
+#define LOG_CATEGORY UCLASS_PHY
+
 #include <common.h>
 #include <dm.h>
 #include <dm/device_compat.h>
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c
index 6e68e52c32c..ea7275ca004 100644
--- a/drivers/pinctrl/pinctrl-uclass.c
+++ b/drivers/pinctrl/pinctrl-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2015  Masahiro Yamada <yamada.masahiro@socionext.com>
  */
 
+#define LOG_CATEGORY UCLASS_PINCTRL
+
 #include <common.h>
 #include <malloc.h>
 #include <asm/global_data.h>
diff --git a/drivers/power/domain/power-domain-uclass.c b/drivers/power/domain/power-domain-uclass.c
index af829db9da1..00d1489ea20 100644
--- a/drivers/power/domain/power-domain-uclass.c
+++ b/drivers/power/domain/power-domain-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2016, NVIDIA CORPORATION.
  */
 
+#define LOG_CATEGORY UCLASS_POWER_DOMAIN
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/power/pmic/pmic-uclass.c b/drivers/power/pmic/pmic-uclass.c
index 79166b8bbcd..5dcf6d8079d 100644
--- a/drivers/power/pmic/pmic-uclass.c
+++ b/drivers/power/pmic/pmic-uclass.c
@@ -4,6 +4,8 @@
  * Przemyslaw Marczak <p.marczak@samsung.com>
  */
 
+#define LOG_CATEGORY UCLASS_PMIC
+
 #include <common.h>
 #include <fdtdec.h>
 #include <errno.h>
diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c
index fac96068233..aca00e56bbe 100644
--- a/drivers/power/regulator/regulator-uclass.c
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -4,6 +4,8 @@
  * Przemyslaw Marczak <p.marczak@samsung.com>
  */
 
+#define LOG_CATEGORY UCLASS_REGULATOR
+
 #include <common.h>
 #include <errno.h>
 #include <dm.h>
diff --git a/drivers/pwm/pwm-uclass.c b/drivers/pwm/pwm-uclass.c
index 027181c6465..648d0757ba6 100644
--- a/drivers/pwm/pwm-uclass.c
+++ b/drivers/pwm/pwm-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_PWM
+
 #include <common.h>
 #include <dm.h>
 #include <pwm.h>
diff --git a/drivers/ram/ram-uclass.c b/drivers/ram/ram-uclass.c
index f4d387fed1e..4e21240fd4c 100644
--- a/drivers/ram/ram-uclass.c
+++ b/drivers/ram/ram-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_RAM
+
 #include <common.h>
 #include <ram.h>
 #include <dm.h>
diff --git a/drivers/remoteproc/rproc-uclass.c b/drivers/remoteproc/rproc-uclass.c
index 5919c8bb978..64c47c1e722 100644
--- a/drivers/remoteproc/rproc-uclass.c
+++ b/drivers/remoteproc/rproc-uclass.c
@@ -3,6 +3,9 @@
  * (C) Copyright 2015
  * Texas Instruments Incorporated - http://www.ti.com/
  */
+
+#define LOG_CATEGORY UCLASS_REMOTEPROC
+
 #define pr_fmt(fmt) "%s: " fmt, __func__
 #include <common.h>
 #include <errno.h>
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
index ac89eaf098a..8caa616ed9f 100644
--- a/drivers/reset/reset-uclass.c
+++ b/drivers/reset/reset-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2016, NVIDIA CORPORATION.
  */
 
+#define LOG_CATEGORY UCLASS_RESET
+
 #include <common.h>
 #include <dm.h>
 #include <fdtdec.h>
diff --git a/drivers/rng/rng-uclass.c b/drivers/rng/rng-uclass.c
index b6af3b8606a..53108e1b319 100644
--- a/drivers/rng/rng-uclass.c
+++ b/drivers/rng/rng-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2019, Linaro Limited
  */
 
+#define LOG_CATEGORY UCLASS_RNG
+
 #include <common.h>
 #include <dm.h>
 #include <rng.h>
diff --git a/drivers/rtc/rtc-uclass.c b/drivers/rtc/rtc-uclass.c
index b406bab32d1..be6a2ddb667 100644
--- a/drivers/rtc/rtc-uclass.c
+++ b/drivers/rtc/rtc-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_RTC
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/scsi/scsi-uclass.c b/drivers/scsi/scsi-uclass.c
index 90a0adda479..a7c1eaf0cf5 100644
--- a/drivers/scsi/scsi-uclass.c
+++ b/drivers/scsi/scsi-uclass.c
@@ -8,6 +8,8 @@
  * Based on ahci-uclass.c
  */
 
+#define LOG_CATEGORY UCLASS_SCSI
+
 #include <common.h>
 #include <dm.h>
 #include <scsi.h>
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
index 8a87eed6839..2b4feace53a 100644
--- a/drivers/serial/serial-uclass.c
+++ b/drivers/serial/serial-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 The Chromium OS Authors.
  */
 
+#define LOG_CATEGORY UCLASS_SERIAL
+
 #include <common.h>
 #include <dm.h>
 #include <env_internal.h>
diff --git a/drivers/smem/smem-uclass.c b/drivers/smem/smem-uclass.c
index ce7bf40656e..8469076915e 100644
--- a/drivers/smem/smem-uclass.c
+++ b/drivers/smem/smem-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2018 Ramon Fried <ramon.fried@gmail.com>
  */
 
+#define LOG_CATEGORY UCLASS_SMEM
+
 #include <common.h>
 #include <dm.h>
 #include <smem.h>
diff --git a/drivers/soc/soc-uclass.c b/drivers/soc/soc-uclass.c
index c32d647864f..dfad32d80db 100644
--- a/drivers/soc/soc-uclass.c
+++ b/drivers/soc/soc-uclass.c
@@ -4,6 +4,8 @@
  *	Dave Gerlach <d-gerlach@ti.com>
  */
 
+#define LOG_CATEGORY UCLASS_SOC
+
 #include <common.h>
 #include <soc.h>
 #include <dm.h>
diff --git a/drivers/sound/codec-uclass.c b/drivers/sound/codec-uclass.c
index 1ec77acfc1c..2cb233bd306 100644
--- a/drivers/sound/codec-uclass.c
+++ b/drivers/sound/codec-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_AUDIO_CODEC
+
 #include <common.h>
 #include <dm.h>
 #include <audio_codec.h>
diff --git a/drivers/sound/i2s-uclass.c b/drivers/sound/i2s-uclass.c
index 2639c86ea21..fc4f686b516 100644
--- a/drivers/sound/i2s-uclass.c
+++ b/drivers/sound/i2s-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_I2S
+
 #include <common.h>
 #include <dm.h>
 #include <i2s.h>
diff --git a/drivers/sound/sound-uclass.c b/drivers/sound/sound-uclass.c
index 0c71e01f337..2ffc4fc7c1d 100644
--- a/drivers/sound/sound-uclass.c
+++ b/drivers/sound/sound-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_SOUND
+
 #include <common.h>
 #include <dm.h>
 #include <i2s.h>
diff --git a/drivers/spi/spi-emul-uclass.c b/drivers/spi/spi-emul-uclass.c
index 52f3f9a0115..64bc19c0011 100644
--- a/drivers/spi/spi-emul-uclass.c
+++ b/drivers/spi/spi-emul-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_SPI_EMUL
+
 #include <common.h>
 #include <dm.h>
 #include <spi.h>
diff --git a/drivers/spmi/spmi-uclass.c b/drivers/spmi/spmi-uclass.c
index ff098731bb2..9d9f46a37d8 100644
--- a/drivers/spmi/spmi-uclass.c
+++ b/drivers/spmi/spmi-uclass.c
@@ -5,6 +5,8 @@
  * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
  */
 
+#define LOG_CATEGORY UCLASS_SPMI
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/sysinfo/sysinfo-uclass.c b/drivers/sysinfo/sysinfo-uclass.c
index 4a660dfd157..c5cc3cb9596 100644
--- a/drivers/sysinfo/sysinfo-uclass.c
+++ b/drivers/sysinfo/sysinfo-uclass.c
@@ -4,6 +4,8 @@
  * Mario Six,  Guntermann & Drunck GmbH, mario.six@gdsys.cc
  */
 
+#define LOG_CATEGORY UCLASS_SYSINFO
+
 #include <common.h>
 #include <dm.h>
 #include <sysinfo.h>
diff --git a/drivers/tee/tee-uclass.c b/drivers/tee/tee-uclass.c
index 2cc6b6c407d..cb1b28e2f83 100644
--- a/drivers/tee/tee-uclass.c
+++ b/drivers/tee/tee-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2018 Linaro Limited
  */
 
+#define LOG_CATEGORY UCLASS_TEE
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/thermal/thermal-uclass.c b/drivers/thermal/thermal-uclass.c
index a4ea1e29145..700df8af254 100644
--- a/drivers/thermal/thermal-uclass.c
+++ b/drivers/thermal/thermal-uclass.c
@@ -3,6 +3,8 @@
  * (C) Copyright 2014 Freescale Semiconductor, Inc
  */
 
+#define LOG_CATEGORY UCLASS_THERMAL
+
 #include <common.h>
 #include <dm.h>
 #include <thermal.h>
diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c
index 73b4a5cd27f..c8e8419b22e 100644
--- a/drivers/timer/timer-uclass.c
+++ b/drivers/timer/timer-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
  */
 
+#define LOG_CATEGORY UCLASS_TIMER
+
 #include <common.h>
 #include <clk.h>
 #include <cpu.h>
diff --git a/drivers/ufs/ufs-uclass.c b/drivers/ufs/ufs-uclass.c
index 034d14fd8da..ceea30c4a95 100644
--- a/drivers/ufs/ufs-uclass.c
+++ b/drivers/ufs/ufs-uclass.c
@@ -5,6 +5,8 @@
  * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
  */
 
+#define LOG_CATEGORY UCLASS_UFS
+
 #include <common.h>
 #include "ufs.h"
 #include <dm.h>
diff --git a/drivers/usb/emul/usb-emul-uclass.c b/drivers/usb/emul/usb-emul-uclass.c
index f5d98b917dc..05f6d3d9e2f 100644
--- a/drivers/usb/emul/usb-emul-uclass.c
+++ b/drivers/usb/emul/usb-emul-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_USB_EMUL
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/usb/gadget/udc/udc-uclass.c b/drivers/usb/gadget/udc/udc-uclass.c
index dbc354e84f9..de8861829c7 100644
--- a/drivers/usb/gadget/udc/udc-uclass.c
+++ b/drivers/usb/gadget/udc/udc-uclass.c
@@ -4,6 +4,8 @@
  * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
  */
 
+#define LOG_CATEGORY UCLASS_USB_GADGET_GENERIC
+
 #include <common.h>
 #include <dm.h>
 #include <dm/device-internal.h>
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index e3b616c3266..fd39c3345c3 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -6,6 +6,8 @@
  * usb_match_device() modified from Linux kernel v4.0.
  */
 
+#define LOG_CATEGORY UCLASS_USB
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/video/backlight-uclass.c b/drivers/video/backlight-uclass.c
index 0aadf8a1f97..c14996d003c 100644
--- a/drivers/video/backlight-uclass.c
+++ b/drivers/video/backlight-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_PANEL_BACKLIGHT
+
 #include <common.h>
 #include <dm.h>
 #include <backlight.h>
diff --git a/drivers/video/bridge/video-bridge-uclass.c b/drivers/video/bridge/video-bridge-uclass.c
index 08d38b244bd..f389bc6b147 100644
--- a/drivers/video/bridge/video-bridge-uclass.c
+++ b/drivers/video/bridge/video-bridge-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_VIDEO_BRIDGE
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c
index 068108e9155..2da3d1d14e9 100644
--- a/drivers/video/display-uclass.c
+++ b/drivers/video/display-uclass.c
@@ -3,6 +3,8 @@
  * Copyright 2014 Google Inc.
  */
 
+#define LOG_CATEGORY UCLASS_DISPLAY
+
 #include <common.h>
 #include <dm.h>
 #include <display.h>
diff --git a/drivers/video/dsi-host-uclass.c b/drivers/video/dsi-host-uclass.c
index 1db1f88a179..6e5256eb126 100644
--- a/drivers/video/dsi-host-uclass.c
+++ b/drivers/video/dsi-host-uclass.c
@@ -5,6 +5,8 @@
  *
  */
 
+#define LOG_CATEGORY UCLASS_DSI_HOST
+
 #include <common.h>
 #include <dm.h>
 #include <dsi_host.h>
diff --git a/drivers/video/panel-uclass.c b/drivers/video/panel-uclass.c
index 246d1b2836d..bb2eaae2e97 100644
--- a/drivers/video/panel-uclass.c
+++ b/drivers/video/panel-uclass.c
@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_PANEL
+
 #include <common.h>
 #include <dm.h>
 #include <panel.h>
diff --git a/drivers/video/vidconsole-uclass.c b/drivers/video/vidconsole-uclass.c
index 81b65f5aaee..8f7d987cdd2 100644
--- a/drivers/video/vidconsole-uclass.c
+++ b/drivers/video/vidconsole-uclass.c
@@ -7,6 +7,8 @@
  * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
  */
 
+#define LOG_CATEGORY UCLASS_VIDEO_CONSOLE
+
 #include <common.h>
 #include <command.h>
 #include <console.h>
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 96ec6f80af3..9f8cf6ef2a9 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2015 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_VIDEO
+
 #include <common.h>
 #include <console.h>
 #include <cpu_func.h>
diff --git a/drivers/video/video_osd-uclass.c b/drivers/video/video_osd-uclass.c
index 82136a292bf..0d3aae4d827 100644
--- a/drivers/video/video_osd-uclass.c
+++ b/drivers/video/video_osd-uclass.c
@@ -4,6 +4,8 @@
  * Mario Six,  Guntermann & Drunck GmbH, mario.six@gdsys.cc
  */
 
+#define LOG_CATEGORY UCLASS_VIDEO_OSD
+
 #include <common.h>
 #include <dm.h>
 #include <video_osd.h>
diff --git a/drivers/virtio/virtio-uclass.c b/drivers/virtio/virtio-uclass.c
index 0379536c542..9e2d0e06a1e 100644
--- a/drivers/virtio/virtio-uclass.c
+++ b/drivers/virtio/virtio-uclass.c
@@ -15,6 +15,8 @@
  * the VirtIO specification v1.0.
  */
 
+#define LOG_CATEGORY UCLASS_VIRTIO
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/w1-eeprom/w1-eeprom-uclass.c b/drivers/w1-eeprom/w1-eeprom-uclass.c
index 7a02af3dd6d..70ba537243f 100644
--- a/drivers/w1-eeprom/w1-eeprom-uclass.c
+++ b/drivers/w1-eeprom/w1-eeprom-uclass.c
@@ -10,6 +10,8 @@
  *
  */
 
+#define LOG_CATEGORY UCLASS_W1_EEPROM
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/w1/w1-uclass.c b/drivers/w1/w1-uclass.c
index b98927389f3..52b519c21d2 100644
--- a/drivers/w1/w1-uclass.c
+++ b/drivers/w1/w1-uclass.c
@@ -12,6 +12,8 @@
  *
  */
 
+#define LOG_CATEGORY UCLASS_W1
+
 #include <common.h>
 #include <dm.h>
 #include <log.h>
diff --git a/drivers/watchdog/wdt-uclass.c b/drivers/watchdog/wdt-uclass.c
index 26871352960..a0c2429e5a4 100644
--- a/drivers/watchdog/wdt-uclass.c
+++ b/drivers/watchdog/wdt-uclass.c
@@ -3,6 +3,8 @@
  * Copyright 2017 Google, Inc
  */
 
+#define LOG_CATEGORY UCLASS_WDT
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
diff --git a/drivers/xen/pvblock.c b/drivers/xen/pvblock.c
index 1c5d039ef05..c25c3ea4fff 100644
--- a/drivers/xen/pvblock.c
+++ b/drivers/xen/pvblock.c
@@ -3,6 +3,9 @@
  * (C) 2007-2008 Samuel Thibault.
  * (C) Copyright 2020 EPAM Systems Inc.
  */
+
+#define LOG_CATEGORY UCLASS_PVBLOCK
+
 #include <blk.h>
 #include <common.h>
 #include <dm.h>
diff --git a/include/dm/uclass.h b/include/dm/uclass.h
index 6752d8ee0be..2778818b528 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -84,8 +84,6 @@ struct udevice;
  * its children. If non-zero this is the size of this data, to be allocated
  * in the child device's parent_plat pointer. This value is only used as
  * a fallback if this member is 0 in the driver.
- * @ops: Uclass operations, providing the consistent interface to devices
- * within the uclass.
  * @flags: Flags for this uclass (DM_UC_...)
  */
 struct uclass_driver {
@@ -106,7 +104,6 @@ struct uclass_driver {
 	int per_device_plat_auto;
 	int per_child_auto;
 	int per_child_plat_auto;
-	const void *ops;
 	uint32_t flags;
 };
 
diff --git a/test/cmd/pwm.c b/test/cmd/pwm.c
index 5343af83fa3..2fc0b5e4070 100644
--- a/test/cmd/pwm.c
+++ b/test/cmd/pwm.c
@@ -18,16 +18,20 @@ static int dm_test_pwm_cmd(struct unit_test_state *uts)
 {
 	struct udevice *dev;
 
+	/* cros-ec-pwm */
 	ut_assertok(uclass_get_device(UCLASS_PWM, 0, &dev));
 	ut_assertnonnull(dev);
 
 	ut_assertok(console_record_reset_enable());
 
 	/* pwm <invert> <pwm_dev_num> <channel> <polarity> */
-	ut_assertok(run_command("pwm invert 0 0 1", 0));
+	/* cros-ec-pwm doesn't support invert */
+	ut_asserteq(1, run_command("pwm invert 0 0 1", 0));
+	ut_assert_nextline("error(-38)")
 	ut_assert_console_end();
 
-	ut_assertok(run_command("pwm invert 0 0 0", 0));
+	ut_asserteq(1, run_command("pwm invert 0 0 0", 0));
+	ut_assert_nextline("error(-38)")
 	ut_assert_console_end();
 
 	/* pwm <config> <pwm_dev_num> <channel> <period_ns> <duty_ns> */
@@ -41,6 +45,30 @@ static int dm_test_pwm_cmd(struct unit_test_state *uts)
 	ut_assertok(run_command("pwm disable 0 0", 0));
 	ut_assert_console_end();
 
+	/* sandbox-pwm */
+	ut_assertok(uclass_get_device(UCLASS_PWM, 1, &dev));
+	ut_assertnonnull(dev);
+
+	ut_assertok(console_record_reset_enable());
+
+	/* pwm <invert> <pwm_dev_num> <channel> <polarity> */
+	ut_assertok(run_command("pwm invert 1 0 1", 0));
+	ut_assert_console_end();
+
+	ut_assertok(run_command("pwm invert 1 0 0", 0));
+	ut_assert_console_end();
+
+	/* pwm <config> <pwm_dev_num> <channel> <period_ns> <duty_ns> */
+	ut_assertok(run_command("pwm config 1 0 10 50", 0));
+	ut_assert_console_end();
+
+	/* pwm <enable/disable> <pwm_dev_num> <channel> */
+	ut_assertok(run_command("pwm enable 1 0", 0));
+	ut_assert_console_end();
+
+	ut_assertok(run_command("pwm disable 1 0", 0));
+	ut_assert_console_end();
+
 	return 0;
 }
 
diff --git a/test/dm/Makefile b/test/dm/Makefile
index c9644617a1f..9ef9171a1cb 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_DM_BOOTCOUNT) += bootcount.o
 obj-$(CONFIG_CLK) += clk.o clk_ccf.o
 obj-$(CONFIG_CPU) += cpu.o
 obj-$(CONFIG_CROS_EC) += cros_ec.o
+obj-$(CONFIG_PWM_CROS_EC) += cros_ec_pwm.o
 obj-$(CONFIG_DEVRES) += devres.o
 obj-$(CONFIG_DMA) += dma.o
 obj-$(CONFIG_VIDEO_MIPI_DSI) += dsi_host.o
diff --git a/test/dm/cros_ec_pwm.c b/test/dm/cros_ec_pwm.c
new file mode 100644
index 00000000000..f8d6e1e6c40
--- /dev/null
+++ b/test/dm/cros_ec_pwm.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <cros_ec.h>
+#include <dm.h>
+#include <pwm.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+static int dm_test_cros_ec_pwm(struct unit_test_state *uts)
+{
+	struct udevice *pwm;
+	struct udevice *ec;
+	uint duty;
+
+	ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "cros-ec-pwm", &pwm));
+	ut_assertnonnull(pwm);
+	ec = dev_get_parent(pwm);
+	ut_assertnonnull(ec);
+
+	ut_assertok(pwm_set_config(pwm, 0, 100, 50));
+	ut_assertok(pwm_set_enable(pwm, 0, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 0, &duty));
+	ut_asserteq(50 * EC_PWM_MAX_DUTY / 100, duty);
+
+	ut_assertok(pwm_set_config(pwm, 0, 15721, 2719));
+	ut_assertok(pwm_set_enable(pwm, 0, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 0, &duty));
+	ut_asserteq(2719 * EC_PWM_MAX_DUTY / 15721, duty);
+
+	ut_assertok(pwm_set_enable(pwm, 0, false));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 0, &duty));
+	ut_asserteq(0, duty);
+
+	ut_assertok(pwm_set_enable(pwm, 0, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 0, &duty));
+	ut_asserteq(2719 * EC_PWM_MAX_DUTY / 15721, duty);
+
+	ut_assertok(pwm_set_config(pwm, 1, 1000, 0));
+	ut_assertok(pwm_set_enable(pwm, 1, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 1, &duty));
+	ut_asserteq(0, duty);
+
+	ut_assertok(pwm_set_config(pwm, 2, 1000, 1024));
+	ut_assertok(pwm_set_enable(pwm, 2, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 2, &duty));
+	ut_asserteq(EC_PWM_MAX_DUTY, duty);
+
+	ut_assertok(pwm_set_config(pwm, 3, EC_PWM_MAX_DUTY, 0xABCD));
+	ut_assertok(pwm_set_enable(pwm, 3, true));
+	ut_assertok(sandbox_cros_ec_get_pwm_duty(ec, 3, &duty));
+	ut_asserteq(0xABCD, duty);
+
+	ut_asserteq(-EINVAL, pwm_set_enable(pwm, 4, true));
+
+	return 0;
+}
+DM_TEST(dm_test_cros_ec_pwm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
diff --git a/test/dm/panel.c b/test/dm/panel.c
index 49f5ac7169d..4d435a0d255 100644
--- a/test/dm/panel.c
+++ b/test/dm/panel.c
@@ -28,7 +28,7 @@ static int dm_test_panel(struct unit_test_state *uts)
 	bool polarity;
 
 	ut_assertok(uclass_first_device_err(UCLASS_PANEL, &dev));
-	ut_assertok(uclass_first_device_err(UCLASS_PWM, &pwm));
+	ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "pwm", &pwm));
 	ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
 	ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", &reg));
 	ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
diff --git a/test/dm/pwm.c b/test/dm/pwm.c
index b624cf3d655..dff626c771a 100644
--- a/test/dm/pwm.c
+++ b/test/dm/pwm.c
@@ -20,7 +20,7 @@ static int dm_test_pwm_base(struct unit_test_state *uts)
 	bool enable;
 	bool polarity;
 
-	ut_assertok(uclass_get_device(UCLASS_PWM, 0, &dev));
+	ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "pwm", &dev));
 	ut_assertnonnull(dev);
 	ut_assertok(pwm_set_config(dev, 0, 100, 50));
 	ut_assertok(pwm_set_enable(dev, 0, true));
@@ -35,8 +35,10 @@ static int dm_test_pwm_base(struct unit_test_state *uts)
 	ut_asserteq(period_ns, 4096);
 	ut_asserteq(duty_ns, 50 * 4096 / 100);
 
+	ut_assertok(uclass_get_device(UCLASS_PWM, 0, &dev));
 	ut_assertok(uclass_get_device(UCLASS_PWM, 1, &dev));
-	ut_asserteq(-ENODEV, uclass_get_device(UCLASS_PWM, 2, &dev));
+	ut_assertok(uclass_get_device(UCLASS_PWM, 2, &dev));
+	ut_asserteq(-ENODEV, uclass_get_device(UCLASS_PWM, 3, &dev));
 
 	return 0;
 }
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index e5f391b7aa9..ec95a543bd9 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -292,8 +292,6 @@ def GetTargetCompileTool(name, cross_compile=None):
 
     if cross_compile is None:
         cross_compile = env.get('CROSS_COMPILE', '')
-    if not cross_compile:
-        return name, []
 
     if name in ('as', 'ar', 'nm', 'ldr', 'strip', 'objcopy', 'objdump'):
         target_name = cross_compile + name