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Information about config values was taken from: From 804820df7bcb3d53a33ecd074b1eac277e938f24 Mon Sep 17 00:00:00 2001 From: Alexey Sheplyakov <asheplyakov@altlinux.org> Date: Thu, 4 Feb 2021 19:35:14 +0400 Subject: [PATCH] config-aarch64: adjusted for Baikal-M (MBM1.0 board) * DW_APB_TIMER=y, DW_APB_TIMER_OF=y: SoC clocks * SERIAL_8250_DW=y: serial console * I2C_DESIGNWARE_CORE=y, I2C_DESIGNWARE_PLATFORM=y: BMC (board management controller) and RTC (Real Time Clock) are connected via I2C. * GPIO_DWAPB=y: device (PCIe, PHY, etc) reset/configuration * RTC_DRV_PCF2127=y: RTC compiled in so the kernel automatically sets the system time from the hardware clock * TP_BMC=y: amongst other things handles the power button * DRM_BAIKAL_VDU=m, DRM_BAIKAL_HDMI=m: video unit and HDMI transmitter * CMA_SIZE_MBYTES=256: video display unit and GPU use system RAM, hence CMA should reserve enough (contiguous) memory. Note: CMA reserves memory during very early init, hence the size has to be hard-coded into CONFIG * MALI_MIDGARD=m: GPU driver, kernel side of proprietary mali blob. Note: kernel mode code is GPLv2, so it's fine to distribute it. * SENSORS_BT1_PVT=m: hardware temperature/voltage sensors * PCI_BAIKAL=m: PCIe root complex. Compiled as a module since takes ages (60 seconds or so) to probe the hardware. If compiled in substantially increases the boot time, and machine is completely unresponsive during probing PCIe. When built as a module probing executes concurrently with other boot activities (unless booting from a PCIe device) * STMMAC_ETH=m, STMMAC_PLATFORM=m, DWMAC_BAIKAL=m: Ethernet driver
38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From 3a2d37d8f2aacdd8711f0f90a4c04d75eccd7a1f Mon Sep 17 00:00:00 2001
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From: Alexey Sheplyakov <asheplyakov@altlinux.org>
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Date: Fri, 19 Feb 2021 12:38:34 +0400
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Subject: [PATCH 621/625] baikal_clk: compatibility with SDK-M 5.1 firmware
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Without this patch the kernel seems to locks up within 10 -- 20 seconds
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after the boot on a board with firmware from SDK-M 5.1
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baikal_clk_set_rate: fixed parent rate calculation (from SDK-M 4.4)
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---
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drivers/clk/baikal/clk-baikal.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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diff --git a/drivers/clk/baikal/clk-baikal.c b/drivers/clk/baikal/clk-baikal.c
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index ddf1d328eeaf..d9709322b2ee 100644
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--- a/drivers/clk/baikal/clk-baikal.c
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+++ b/drivers/clk/baikal/clk-baikal.c
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@@ -181,11 +181,15 @@ static int baikal_clk_set_rate(struct clk_hw *hw, unsigned long rate,
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struct arm_smccc_res res;
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struct baikal_clk_cmu *pclk = to_baikal_cmu(hw);
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uint32_t cmd;
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+ unsigned long parent;
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- if (pclk->is_clk_ch)
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+ if (pclk->is_clk_ch) {
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cmd = CMU_CLK_CH_SET_RATE;
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- else
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+ parent = pclk->parent;
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+ } else {
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cmd = CMU_PLL_SET_RATE;
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+ parent = parent_rate;
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+ }
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pr_debug("[%s, %x:%d:%s] %s, %ld\n",
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pclk->name,
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--
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2.31.1
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