Merge "fix(plat/marvell/a3720/uart): fix UART parent clock rate determination" into integration

drivers/marvell/comphy/phy-comphy-3700.c

@@ -14,6 +14,7 @@
 
 #include <mvebu.h>
 #include <mvebu_def.h>
+#include <plat_marvell.h>
 
 #include "phy-comphy-3700.h"
 #include "phy-comphy-common.h"
@@ -29,15 +30,6 @@
 #define USB3_GBE1_PHY		(MVEBU_REGS_BASE + 0x5C000)
 #define COMPHY_SD_ADDR		(MVEBU_REGS_BASE + 0x1F000)
 
-/*
- * Below address in used only for reading, therefore no problem with concurrent
- * Linux access.
- */
-#define MVEBU_TEST_PIN_LATCH_N (MVEBU_NB_GPIO_REG_BASE + 0x8)
- #define MVEBU_XTAL_MODE_MASK		BIT(9)
- #define MVEBU_XTAL_MODE_OFFS		9
- #define MVEBU_XTAL_CLOCK_25MHZ		0x0
-
 struct sgmii_phy_init_data_fix {
 	uint16_t addr;
 	uint16_t value;
@@ -125,20 +117,6 @@ static uint16_t sgmii_phy_init[512] = {
 	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000	/*1F8 */
 };
 
-/* returns reference clock in MHz (25 or 40) */
-static uint32_t get_ref_clk(void)
-{
-	uint32_t val;
-
-	val = (mmio_read_32(MVEBU_TEST_PIN_LATCH_N) & MVEBU_XTAL_MODE_MASK) >>
-		MVEBU_XTAL_MODE_OFFS;
-
-	if (val == MVEBU_XTAL_CLOCK_25MHZ)
-		return 25;
-	else
-		return 40;
-}
-
 /* PHY selector configures with corresponding modes */
 static void mvebu_a3700_comphy_set_phy_selector(uint8_t comphy_index,
 						uint32_t comphy_mode)

include/plat/marvell/armada/a3k/common/plat_marvell.h

@@ -100,4 +100,6 @@ void plat_marvell_interconnect_enter_coherency(void);
 
 const mmap_region_t *plat_marvell_get_mmap(void);
 
+uint32_t get_ref_clk(void);
+
 #endif /* PLAT_MARVELL_H */

plat/marvell/armada/a3k/common/a3700_common.mk

@@ -38,6 +38,7 @@ PLAT_INCLUDES		:=	-I$(PLAT_FAMILY_BASE)/$(PLAT)		\
 				-I$/drivers/arm/gic/common/
 
 PLAT_BL_COMMON_SOURCES	:=	$(PLAT_COMMON_BASE)/aarch64/a3700_common.c \
+				$(PLAT_COMMON_BASE)/aarch64/a3700_clock.S \
 				$(MARVELL_DRV_BASE)/uart/a3700_console.S
 
 BL1_SOURCES		+=	$(PLAT_COMMON_BASE)/aarch64/plat_helpers.S \

plat/marvell/armada/a3k/common/aarch64/a3700_clock.S

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <asm_macros.S>
+#include <platform_def.h>
+
+/*
+ * Below address in used only for reading, therefore no problem with concurrent
+ * Linux access.
+ */
+#define MVEBU_TEST_PIN_LATCH_N (MVEBU_NB_GPIO_REG_BASE + 0x8)
+ #define MVEBU_XTAL_MODE_MASK		BIT(9)
+
+	/* -----------------------------------------------------
+	 * uint32_t get_ref_clk (void);
+	 *
+	 * returns reference clock in MHz (25 or 40)
+	 * -----------------------------------------------------
+	 */
+.globl	get_ref_clk
+func get_ref_clk
+	mov_imm	x0, MVEBU_TEST_PIN_LATCH_N
+	ldr	w0, [x0]
+	tst	w0, #MVEBU_XTAL_MODE_MASK
+	bne	40
+	mov	w0, #25
+	ret
+40:
+	mov	w0, #40
+	ret
+endfunc get_ref_clk

plat/marvell/armada/a3k/common/include/platform_def.h

@@ -164,7 +164,6 @@
  * PL011 related constants
  */
 #define PLAT_MARVELL_UART_BASE			(MVEBU_REGS_BASE + 0x12000)
-#define PLAT_MARVELL_UART_CLK_IN_HZ		25000000
 
 /* Required platform porting definitions */
 #define PLAT_MAX_PWR_LVL			MPIDR_AFFLVL1

plat/marvell/armada/common/aarch64/marvell_helpers.S

@@ -63,8 +63,16 @@ endfunc plat_marvell_calc_core_pos
 	 * ---------------------------------------------
 	 */
 func plat_crash_console_init
-	mov_imm	x0, PLAT_MARVELL_UART_BASE
+#ifdef PLAT_a3700
+	mov	x1, x30
+	bl	get_ref_clk
+	mov	x30, x1
+	mov_imm	x1, 1000000
+	mul	x1, x0, x1
+#else
 	mov_imm	x1, PLAT_MARVELL_UART_CLK_IN_HZ
+#endif
+	mov_imm	x0, PLAT_MARVELL_UART_BASE
 	mov_imm	x2, MARVELL_CONSOLE_BAUDRATE
 #ifdef PLAT_a3700
 	b	console_a3700_core_init

plat/marvell/armada/common/marvell_console.c

@@ -14,6 +14,7 @@
 
 #ifdef PLAT_a3700
 #include <drivers/marvell/uart/a3700_console.h>
+#define PLAT_MARVELL_UART_CLK_IN_HZ (get_ref_clk() * 1000000)
 #define console_marvell_register console_a3700_register
 #else
 #include <drivers/ti/uart/uart_16550.h>