[PATCH 5/6] clk: qcom: gcc-sdm660: Account for needed adjustments in probe function
From: Konrad Dybcio <hidden>
Date: 2021-02-20 15:58:17
Also in:
linux-arm-msm, linux-clk, lkml, phone-devel
Subsystem:
arm/qualcomm mailing list, common clk framework, qualcomm clock drivers, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Bjorn Andersson, Linus Torvalds
Downstream kernel executes a bunch of commands, such as keeping
GPU/MMSS interface clocks alive to make sure all subsystems can
work properly. Add these to make sure they do.
Fixes: f2a76a2955c0 ("clk: qcom: Add Global Clock controller (GCC) driver for SDM660")
Signed-off-by: Konrad Dybcio <redacted>
---
drivers/clk/qcom/gcc-sdm660.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/qcom/gcc-sdm660.c b/drivers/clk/qcom/gcc-sdm660.c
index bc8dfcd6d629..db2185c88b77 100644
--- a/drivers/clk/qcom/gcc-sdm660.c
+++ b/drivers/clk/qcom/gcc-sdm660.c@@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/regmap.h> #include <linux/reset-controller.h>
@@ -2622,7 +2623,27 @@ static int gcc_sdm660_probe(struct platform_device *pdev) if (ret) return ret; - return qcom_cc_really_probe(pdev, &gcc_sdm660_desc, regmap); + ret = qcom_cc_really_probe(pdev, &gcc_sdm660_desc, regmap); + if (ret) + return ret; + + /* Disable the GPLL0 active input to MMSS and GPU via MISC registers */ + regmap_update_bits(regmap, 0x0902c, 0x3, 0x3); + regmap_update_bits(regmap, 0x71028, 0x3, 0x3); + + /* This clock is used for all MMSSCC register access */ + clk_prepare_enable(gcc_mmss_noc_cfg_ahb_clk.clkr.hw.clk); + + /* This clock is used for all GPUCC register access */ + clk_prepare_enable(gcc_gpu_cfg_ahb_clk.clkr.hw.clk); + + /* Keep bimc gfx clock port on all the time */ + clk_prepare_enable(gcc_bimc_gfx_clk.clkr.hw.clk); + + /* Set the HMSS_GPLL0_SRC for 300MHz to CPU subsystem */ + clk_set_rate(hmss_gpll0_clk_src.clkr.hw.clk, 300000000); + + return ret; } static struct platform_driver gcc_sdm660_driver = {
--
2.30.1