[PATCH 0/3] General Purpose clocks and matisse-wifi backlight

[PATCH 0/3] General Purpose clocks and matisse-wifi backlight

[Matti Lehtimäki]

This series adds support for general purpose clocks found on MSM8226
and enables ti,lp8556 backlight on matisse-wifi which uses general
purpose clocks with clk-pwm.

Luca Weiss (1):
  pinctrl: qcom: msm8226: Add General Purpose clocks

Matti Lehtimäki (2):
  dt-bindings: pinctrl: msm8226: Add General Purpose clocks
  ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight

 .../pinctrl/qcom,msm8226-pinctrl.yaml         |  4 +-
 .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 59 +++++++++++++++++++
 drivers/pinctrl/qcom/pinctrl-msm8226.c        | 11 +++-
 3 files changed, 70 insertions(+), 4 deletions(-)

-- 
2.34.1

[PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Matti Lehtimäki]

Document the general purpose clock functions that are found on MSM8226.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
 .../devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
index 3b79f5be860b..6e3808065845 100644
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
@@ -66,8 +66,8 @@ $defs:
         enum: [ gpio, cci_i2c0, blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim5,
                 blsp_i2c1, blsp_i2c2, blsp_i2c3, blsp_i2c4, blsp_i2c5, blsp_spi1,
                 blsp_spi2, blsp_spi3, blsp_spi5, blsp_uart1, blsp_uart2,
-                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0, cam_mclk1, sdc3,
-                wlan ]
+                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0, cam_mclk1,
+                gp0_clk, gp1_clk, sdc3, wlan ]
 
       bias-pull-down: true
       bias-pull-up: true
-- 
2.34.1

[PATCH 2/3] pinctrl: qcom: msm8226: Add General Purpose clocks

[Matti Lehtimäki]

From: Luca Weiss <luca@z3ntu.xyz>

Add support for the general purpose clocks that are found on MSM8226.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Co-developed-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
 drivers/pinctrl/qcom/pinctrl-msm8226.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm8226.c b/drivers/pinctrl/qcom/pinctrl-msm8226.c
index fca0645e8008..0f05725e0a21 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm8226.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm8226.c
@@ -362,6 +362,8 @@ enum msm8226_functions {
 	MSM_MUX_cam_mclk0,
 	MSM_MUX_cam_mclk1,
 	MSM_MUX_cci_i2c0,
+	MSM_MUX_gp0_clk,
+	MSM_MUX_gp1_clk,
 	MSM_MUX_gpio,
 	MSM_MUX_sdc3,
 	MSM_MUX_wlan,
@@ -447,6 +449,9 @@ static const char * const cci_i2c0_groups[] = { "gpio29", "gpio30" };
 static const char * const cam_mclk0_groups[] = { "gpio26" };
 static const char * const cam_mclk1_groups[] = { "gpio27" };
 
+static const char * const gp0_clk_groups[] = { "gpio33" };
+static const char * const gp1_clk_groups[] = { "gpio34" };
+
 static const char * const sdc3_groups[] = {
 	"gpio39", "gpio40", "gpio41", "gpio42", "gpio43", "gpio44"
 };
@@ -480,6 +485,8 @@ static const struct msm_function msm8226_functions[] = {
 	FUNCTION(cam_mclk0),
 	FUNCTION(cam_mclk1),
 	FUNCTION(cci_i2c0),
+	FUNCTION(gp0_clk),
+	FUNCTION(gp1_clk),
 	FUNCTION(gpio),
 	FUNCTION(sdc3),
 	FUNCTION(wlan),
@@ -519,8 +526,8 @@ static const struct msm_pingroup msm8226_groups[] = {
 	PINGROUP(30,  cci_i2c0, NA, NA, NA, NA, NA, NA),
 	PINGROUP(31,  NA, NA, NA, NA, NA, NA, NA),
 	PINGROUP(32,  NA, NA, NA, NA, NA, NA, NA),
-	PINGROUP(33,  NA, NA, NA, NA, NA, NA, NA),
-	PINGROUP(34,  NA, NA, NA, NA, NA, NA, NA),
+	PINGROUP(33,  NA, NA, gp0_clk, NA, NA, NA, NA),
+	PINGROUP(34,  NA, NA, gp1_clk, NA, NA, NA, NA),
 	PINGROUP(35,  NA, NA, NA, NA, NA, NA, NA),
 	PINGROUP(36,  NA, NA, NA, NA, NA, NA, NA),
 	PINGROUP(37,  NA, NA, NA, NA, NA, NA, NA),
-- 
2.34.1

[PATCH 3/3] ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight

[Matti Lehtimäki]

Uses ti,lp8556 backlight with clk-pwm.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
 .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
index 15b9590ba07b..848cfda64e5a 100644
--- a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
+++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
@@ -23,6 +23,14 @@ aliases {
 		display0 = &framebuffer0;
 	};
 
+	backlight_pwm: pwm {
+		compatible = "clk-pwm";
+		#pwm-cells = <2>;
+		clocks = <&mmcc CAMSS_GP0_CLK>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&backlight_pwm_default_state>;
+	};
+
 	chosen {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -80,6 +88,45 @@ key-volume-up {
 		};
 	};
 
+	i2c-backlight {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 20 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 21 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&backlight_i2c_default_state>;
+
+		i2c-gpio,delay-us = <4>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		backlight@2c {
+			compatible = "ti,lp8556";
+			reg = <0x2c>;
+
+			dev-ctrl = /bits/ 8 <0x80>;
+			init-brt = /bits/ 8 <0x3f>;
+			pwm-period = <100000>;
+
+			pwms = <&backlight_pwm 0 100000>;
+			pwm-names = "lp8556";
+
+			rom-a0h {
+				rom-addr = /bits/ 8 <0xa0>;
+				rom-val = /bits/ 8 <0x44>;
+			};
+			rom-a1h {
+				rom-addr = /bits/ 8 <0xa1>;
+				rom-val = /bits/ 8 <0x6c>;
+			};
+			rom-a5h {
+				rom-addr = /bits/ 8 <0xa5>;
+				rom-val = /bits/ 8 <0x24>;
+			};
+		};
+	};
+
 	reg_tsp_1p8v: regulator-tsp-1p8v {
 		compatible = "regulator-fixed";
 		regulator-name = "tsp_1p8v";
@@ -418,6 +465,18 @@ accel_int_default_state: accel-int-default-state {
 		bias-disable;
 	};
 
+	backlight_i2c_default_state: backlight-i2c-default-state {
+		pins = "gpio20", "gpio21";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	backlight_pwm_default_state: backlight-pwm-default-state {
+		pins = "gpio33";
+		function = "gp0_clk";
+	};
+
 	muic_int_default_state: muic-int-default-state {
 		pins = "gpio67";
 		function = "gpio";
-- 
2.34.1

Re: [PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Krzysztof Kozlowski]

On 06/01/2023 12:44, Matti Lehtimäki wrote:
> Document the general purpose clock functions that are found on MSM8226.
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
>  .../devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml     | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> index 3b79f5be860b..6e3808065845 100644
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> @@ -66,8 +66,8 @@ $defs:
>          enum: [ gpio, cci_i2c0, blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim5,
>                  blsp_i2c1, blsp_i2c2, blsp_i2c3, blsp_i2c4, blsp_i2c5, blsp_spi1,
>                  blsp_spi2, blsp_spi3, blsp_spi5, blsp_uart1, blsp_uart2,
> -                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0, cam_mclk1, sdc3,
> -                wlan ]
> +                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0, cam_mclk1,
> +                gp0_clk, gp1_clk, sdc3, wlan ]

Driver does not support them (and there is no driver change, unless you
cc-ed people selectively...).

Best regards,
Krzysztof

Re: [PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Matti Lehtimäki]

On 6.1.2023 14.32, Krzysztof Kozlowski wrote:
> On 06/01/2023 12:44, Matti Lehtimäki wrote:
>> +                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0,
>> cam_mclk1, +                gp0_clk, gp1_clk, sdc3, wlan ]
> 
> Driver does not support them (and there is no driver change, unless
> you cc-ed people selectively...).

The driver changes are in patch number 2 of the series, I used
git send-mail with a cc script, which uses get_maintainer.pl to
get the needed addresses for each patch, to send the patches. It
probably didn't send every patch to everyone and would need some
improvement.

-Matti

Re: [PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Krzysztof Kozlowski]

On 06/01/2023 13:41, Matti Lehtimäki wrote:
> On 6.1.2023 14.32, Krzysztof Kozlowski wrote:
>> On 06/01/2023 12:44, Matti Lehtimäki wrote:
>>> +                blsp_uart3, blsp_uart4, blsp_uart5, cam_mclk0,
>>> cam_mclk1, +                gp0_clk, gp1_clk, sdc3, wlan ]
>>
>> Driver does not support them (and there is no driver change, unless
>> you cc-ed people selectively...).
> 
> The driver changes are in patch number 2 of the series, I used
> git send-mail with a cc script, which uses get_maintainer.pl to
> get the needed addresses for each patch, to send the patches. It
> probably didn't send every patch to everyone and would need some
> improvement.

Ah, ok, such method is recommended for big patchsets. In regular cases
please Cc everyone for all patches. I am using this one:

https://pastebin.com/HAjuht68

Best regards,
Krzysztof

Re: [PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Krzysztof Kozlowski]

On 06/01/2023 12:44, Matti Lehtimäki wrote:
> Document the general purpose clock functions that are found on MSM8226.
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
>  .../devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml     | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH 3/3] ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight

[Konrad Dybcio]

On 6.01.2023 12:44, Matti Lehtimäki wrote:
> Uses ti,lp8556 backlight with clk-pwm.
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
>  .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
> index 15b9590ba07b..848cfda64e5a 100644
> --- a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
> +++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
> @@ -23,6 +23,14 @@ aliases {
>  		display0 = &framebuffer0;
>  	};
>  
> +	backlight_pwm: pwm {
This should be sorted alphabetically.


> +		compatible = "clk-pwm";
> +		#pwm-cells = <2>;
> +		clocks = <&mmcc CAMSS_GP0_CLK>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&backlight_pwm_default_state>;
> +	};
> +
>  	chosen {
>  		#address-cells = <1>;
>  		#size-cells = <1>;
> @@ -80,6 +88,45 @@ key-volume-up {
>  		};
>  	};
>  
> +	i2c-backlight {
> +		compatible = "i2c-gpio";
> +		sda-gpios = <&tlmm 20 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
> +		scl-gpios = <&tlmm 21 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&backlight_i2c_default_state>;
Please reorder these two properties.

> +
> +		i2c-gpio,delay-us = <4>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		backlight@2c {
> +			compatible = "ti,lp8556";
> +			reg = <0x2c>;
> +
> +			dev-ctrl = /bits/ 8 <0x80>;
> +			init-brt = /bits/ 8 <0x3f>;
> +			pwm-period = <100000>;
> +
> +			pwms = <&backlight_pwm 0 100000>;
> +			pwm-names = "lp8556";
> +
> +			rom-a0h {
> +				rom-addr = /bits/ 8 <0xa0>;
> +				rom-val = /bits/ 8 <0x44>;
> +			};
Please add a newline between each subnode.

Otherwise I think this looks good..

Konrad

> +			rom-a1h {
> +				rom-addr = /bits/ 8 <0xa1>;
> +				rom-val = /bits/ 8 <0x6c>;
> +			};
> +			rom-a5h {
> +				rom-addr = /bits/ 8 <0xa5>;
> +				rom-val = /bits/ 8 <0x24>;
> +			};
> +		};
> +	};
> +
>  	reg_tsp_1p8v: regulator-tsp-1p8v {
>  		compatible = "regulator-fixed";
>  		regulator-name = "tsp_1p8v";
> @@ -418,6 +465,18 @@ accel_int_default_state: accel-int-default-state {
>  		bias-disable;
>  	};
>  
> +	backlight_i2c_default_state: backlight-i2c-default-state {
> +		pins = "gpio20", "gpio21";
> +		function = "gpio";
> +		drive-strength = <2>;
> +		bias-disable;
> +	};
> +
> +	backlight_pwm_default_state: backlight-pwm-default-state {
> +		pins = "gpio33";
> +		function = "gp0_clk";
> +	};
> +
>  	muic_int_default_state: muic-int-default-state {
>  		pins = "gpio67";
>  		function = "gpio";

Re: [PATCH 1/3] dt-bindings: pinctrl: msm8226: Add General Purpose clocks

[Linus Walleij]

On Fri, Jan 6, 2023 at 12:44 PM Matti Lehtimäki
<matti.lehtimaki@gmail.com> wrote:

> Document the general purpose clock functions that are found on MSM8226.
>
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>

Patch applied!

Yours,
Linus Walleij

Re: [PATCH 2/3] pinctrl: qcom: msm8226: Add General Purpose clocks

[Linus Walleij]

On Fri, Jan 6, 2023 at 12:44 PM Matti Lehtimäki
<matti.lehtimaki@gmail.com> wrote:

> From: Luca Weiss <luca@z3ntu.xyz>
>
> Add support for the general purpose clocks that are found on MSM8226.
>
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> Co-developed-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>

Patch applied!

Please funnel patch 3/3 thru the SoC tree.

Yours,
Linus Walleij