[PATCH] arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc

[PATCH] arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc

[Bjorn Andersson]

The GCC_LPASS_Q6_AXI_CLK and GCC_LPASS_SWAY_CLK clocks may not be
touched on a typical UEFI based SDM845 device, but when the kernel is
built with CONFIG_SDM_LPASSCC_845 this happens, unless they are marked
as protected-clocks in the DT.

This was done for the MTP and the Pocophone, but not for DB845c and the
Lenovo Yoga C630 - causing these to fail to boot if the LPASS clock
controller is enabled (which it typically isn't).

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts           | 4 +++-
 arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index 7cc236575ee2..c0b93813ea9a 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -415,7 +415,9 @@ &dsi0_phy {
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
-			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>;
+			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
+			   <GCC_LPASS_Q6_AXI_CLK>,
+			   <GCC_LPASS_SWAY_CLK>;
 };
 
 &gpu {
diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
index 13fdd02cffe6..87ffbb89fbc7 100644
--- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
+++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
@@ -302,7 +302,9 @@ &dsi0_phy {
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
-			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>;
+			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
+			   <GCC_LPASS_Q6_AXI_CLK>,
+			   <GCC_LPASS_SWAY_CLK>;
 };
 
 &gpu {
-- 
2.29.2

Re: [PATCH] arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc

[Vinod Koul]

On 21-12-20, 16:11, Bjorn Andersson wrote:
> The GCC_LPASS_Q6_AXI_CLK and GCC_LPASS_SWAY_CLK clocks may not be
> touched on a typical UEFI based SDM845 device, but when the kernel is
> built with CONFIG_SDM_LPASSCC_845 this happens, unless they are marked
> as protected-clocks in the DT.
> 
> This was done for the MTP and the Pocophone, but not for DB845c and the
> Lenovo Yoga C630 - causing these to fail to boot if the LPASS clock
> controller is enabled (which it typically isn't).

Reviewed-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Vinod Koul <vkoul@kernel.org> #on db845c

-- 
~Vinod

Re: [PATCH] arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc

[patchwork-bot+linux-arm-msm]

Hello:

This patch was applied to qcom/linux.git (refs/heads/for-next):

On Mon, 21 Dec 2020 16:11:03 -0800 you wrote:
> The GCC_LPASS_Q6_AXI_CLK and GCC_LPASS_SWAY_CLK clocks may not be
> touched on a typical UEFI based SDM845 device, but when the kernel is
> built with CONFIG_SDM_LPASSCC_845 this happens, unless they are marked
> as protected-clocks in the DT.
> 
> This was done for the MTP and the Pocophone, but not for DB845c and the
> Lenovo Yoga C630 - causing these to fail to boot if the LPASS clock
> controller is enabled (which it typically isn't).
> 
> [...]

Here is the summary with links:
  - arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc
    https://git.kernel.org/qcom/c/93f2a11580a9

You are awesome, thank you!
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