[PATCH v2 0/3] Add MDSS_BCR reset (+some more) for MSM8953

[PATCH v2 0/3] Add MDSS_BCR reset (+some more) for MSM8953

[Luca Weiss]

Add the MDSS_BCR reset that is found in the GCC of MSM8953 so we can
make sure the MDSS gets properly reset before Linux starts using it.

Also add some others that have been found in the LK sources.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
Changes in v2:
- Add more resets from LK sources
- Pick up tags
- Link to v1: https://lore.kernel.org/r/20240123-msm8953-mdss-reset-v1-0-bb8c6d3ce897@z3ntu.xyz

---
Vladimir Lypak (3):
      dt-bindings: clock: gcc-msm8953: add more resets
      clk: qcom: gcc-msm8953: add more resets
      arm64: dts: qcom: msm8953: add reset for display subsystem

 arch/arm64/boot/dts/qcom/msm8953.dtsi        | 2 ++
 drivers/clk/qcom/gcc-msm8953.c               | 4 ++++
 include/dt-bindings/clock/qcom,gcc-msm8953.h | 4 ++++
 3 files changed, 10 insertions(+)
---
base-commit: 6613476e225e090cc9aad49be7fa504e290dd33d
change-id: 20240123-msm8953-mdss-reset-68308a03fff5

Best regards,
-- 
Luca Weiss <luca@z3ntu.xyz>

[PATCH v2 1/3] dt-bindings: clock: gcc-msm8953: add more resets

[Luca Weiss]

From: Vladimir Lypak <vladimir.lypak@gmail.com>

Add new defines for some more BCRs found on MSM8953.

Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
[luca: expand commit message, add more resets]
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
 include/dt-bindings/clock/qcom,gcc-msm8953.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/dt-bindings/clock/qcom,gcc-msm8953.h b/include/dt-bindings/clock/qcom,gcc-msm8953.h
index 783162da6148..13b4a62877e5 100644
--- a/include/dt-bindings/clock/qcom,gcc-msm8953.h
+++ b/include/dt-bindings/clock/qcom,gcc-msm8953.h
@@ -218,6 +218,10 @@
 #define GCC_USB3PHY_PHY_BCR			3
 #define GCC_USB3_PHY_BCR			4
 #define GCC_USB_30_BCR				5
+#define GCC_MDSS_BCR				6
+#define GCC_CRYPTO_BCR				7
+#define GCC_SDCC1_BCR				8
+#define GCC_SDCC2_BCR				9
 
 /* GDSCs */
 #define CPP_GDSC				0

-- 
2.43.0

[PATCH v2 2/3] clk: qcom: gcc-msm8953: add more resets

[Luca Weiss]

From: Vladimir Lypak <vladimir.lypak@gmail.com>

Add new entries in the gcc driver for some more resets found on MSM8953.

Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
[luca: expand commit message, move entry, add more entries]
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
 drivers/clk/qcom/gcc-msm8953.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clk/qcom/gcc-msm8953.c b/drivers/clk/qcom/gcc-msm8953.c
index 3e5a8cb14d4d..68359534ff25 100644
--- a/drivers/clk/qcom/gcc-msm8953.c
+++ b/drivers/clk/qcom/gcc-msm8953.c
@@ -4171,6 +4171,10 @@ static const struct qcom_reset_map gcc_msm8953_resets[] = {
 	[GCC_USB3PHY_PHY_BCR]	= { 0x3f03c },
 	[GCC_USB3_PHY_BCR]	= { 0x3f034 },
 	[GCC_USB_30_BCR]	= { 0x3f070 },
+	[GCC_MDSS_BCR]		= { 0x4d074 },
+	[GCC_CRYPTO_BCR]	= { 0x16000 },
+	[GCC_SDCC1_BCR]		= { 0x42000 },
+	[GCC_SDCC2_BCR]		= { 0x43000 },
 };
 
 static const struct regmap_config gcc_msm8953_regmap_config = {

-- 
2.43.0

[PATCH v2 3/3] arm64: dts: qcom: msm8953: add reset for display subsystem

[Luca Weiss]

From: Vladimir Lypak <vladimir.lypak@gmail.com>

With this reset we can avoid situations like IRQ storms from DSI host
before it even started probing (because boot-loader left DSI IRQs on).

Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
 arch/arm64/boot/dts/qcom/msm8953.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8953.dtsi b/arch/arm64/boot/dts/qcom/msm8953.dtsi
index ad2f8cf9c966..dcb5c98b793c 100644
--- a/arch/arm64/boot/dts/qcom/msm8953.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8953.dtsi
@@ -859,6 +859,8 @@ mdss: display-subsystem@1a00000 {
 				      "vsync",
 				      "core";
 
+			resets = <&gcc GCC_MDSS_BCR>;
+
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;

-- 
2.43.0

Re: [PATCH v2 3/3] arm64: dts: qcom: msm8953: add reset for display subsystem

[Dmitry Baryshkov]

On Thu, 25 Jan 2024 at 23:36, Luca Weiss <luca@z3ntu.xyz> wrote:
>
> From: Vladimir Lypak <vladimir.lypak@gmail.com>
>
> With this reset we can avoid situations like IRQ storms from DSI host
> before it even started probing (because boot-loader left DSI IRQs on).
>
> Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> ---
>  arch/arm64/boot/dts/qcom/msm8953.dtsi | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

Re: [PATCH v2 2/3] clk: qcom: gcc-msm8953: add more resets

[Dmitry Baryshkov]

On Thu, 25 Jan 2024 at 23:36, Luca Weiss <luca@z3ntu.xyz> wrote:
>
> From: Vladimir Lypak <vladimir.lypak@gmail.com>
>
> Add new entries in the gcc driver for some more resets found on MSM8953.
>
> Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
> [luca: expand commit message, move entry, add more entries]
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> ---
>  drivers/clk/qcom/gcc-msm8953.c | 4 ++++
>  1 file changed, 4 insertions(+)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

Re: (subset) [PATCH v2 0/3] Add MDSS_BCR reset (+some more) for MSM8953

[Bjorn Andersson]

On Thu, 25 Jan 2024 22:35:11 +0100, Luca Weiss wrote:
> Add the MDSS_BCR reset that is found in the GCC of MSM8953 so we can
> make sure the MDSS gets properly reset before Linux starts using it.
> 
> Also add some others that have been found in the LK sources.
> 
> 

Applied, thanks!

[3/3] arm64: dts: qcom: msm8953: add reset for display subsystem
      commit: 9b4dec638c9cd1e881125894e263b0f824b8f75e

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>