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Message-ID: <d9dfa72d-b2d5-4772-b799-653c7b51ee87@salutedevices.com>
Date: Thu, 12 Sep 2024 00:58:59 +0300
From: George Stark <gnstark@...utedevices.com>
To: <neil.armstrong@...aro.org>
CC: <linux-pwm@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-amlogic@...ts.infradead.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <kernel@...utedevices.com>, Dmitry Rokosov
<ddrokosov@...utedevices.com>
Subject: Re: [PATCH v4 3/3] arm64: dts: meson: a1: add definitions for meson
PWM
Hello Neil
Please take a look at this patch. Appropriate bindings were merged recently.
On 7/11/24 02:41, George Stark wrote:
> The chip has 3 dual-channel PWM modules PWM_AB, PWM_CD, PWM_EF those
> can be connected to various digital I/O pins.
>
> Each of 6 PWM is driven by individually selected clock parent and
> 8-bit divider. The PWM signal is generated using two 16-bit counters.
>
> Signed-off-by: George Stark <gnstark@...utedevices.com>
> Signed-off-by: Dmitry Rokosov <ddrokosov@...utedevices.com>
> ---
> arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 215 ++++++++++++++++++++++
> 1 file changed, 215 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> index 85e56c021e99..0dc39fb8f59d 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
> @@ -307,6 +307,188 @@ mux {
> };
> };
>
> + pwm_a_pins1: pwm-a-pins1 {
> + mux {
> + groups = "pwm_a_x6";
> + function = "pwm_a";
> + };
> + };
> +
> + pwm_a_pins2: pwm-a-pins2 {
> + mux {
> + groups = "pwm_a_x7";
> + function = "pwm_a";
> + };
> + };
> +
> + pwm_a_pins3: pwm-a-pins3 {
> + mux {
> + groups = "pwm_a_f10";
> + function = "pwm_a";
> + };
> + };
> +
> + pwm_a_pins4: pwm-a-pins4 {
> + mux {
> + groups = "pwm_a_f6";
> + function = "pwm_a";
> + };
> + };
> +
> + pwm_a_pins5: pwm-a-pins5 {
> + mux {
> + groups = "pwm_a_a";
> + function = "pwm_a";
> + };
> + };
> +
> + pwm_b_pins1: pwm-b-pins1 {
> + mux {
> + groups = "pwm_b_x";
> + function = "pwm_b";
> + };
> + };
> +
> + pwm_b_pins2: pwm-b-pins2 {
> + mux {
> + groups = "pwm_b_f";
> + function = "pwm_b";
> + };
> + };
> +
> + pwm_b_pins3: pwm-b-pins3 {
> + mux {
> + groups = "pwm_b_a";
> + function = "pwm_b";
> + };
> + };
> +
> + pwm_c_pins1: pwm-c-pins1 {
> + mux {
> + groups = "pwm_c_x";
> + function = "pwm_c";
> + };
> + };
> +
> + pwm_c_pins2: pwm-c-pins2 {
> + mux {
> + groups = "pwm_c_f3";
> + function = "pwm_c";
> + };
> + };
> +
> + pwm_c_pins3: pwm-c-pins3 {
> + mux {
> + groups = "pwm_c_f8";
> + function = "pwm_c";
> + };
> + };
> +
> + pwm_c_pins4: pwm-c-pins4 {
> + mux {
> + groups = "pwm_c_a";
> + function = "pwm_c";
> + };
> + };
> +
> + pwm_d_pins1: pwm-d-pins1 {
> + mux {
> + groups = "pwm_d_x15";
> + function = "pwm_d";
> + };
> + };
> +
> + pwm_d_pins2: pwm-d-pins2 {
> + mux {
> + groups = "pwm_d_x13";
> + function = "pwm_d";
> + };
> + };
> +
> + pwm_d_pins3: pwm-d-pins3 {
> + mux {
> + groups = "pwm_d_x10";
> + function = "pwm_d";
> + };
> + };
> +
> + pwm_d_pins4: pwm-d-pins4 {
> + mux {
> + groups = "pwm_d_f";
> + function = "pwm_d";
> + };
> + };
> +
> + pwm_e_pins1: pwm-e-pins1 {
> + mux {
> + groups = "pwm_e_p";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_e_pins2: pwm-e-pins2 {
> + mux {
> + groups = "pwm_e_x16";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_e_pins3: pwm-e-pins3 {
> + mux {
> + groups = "pwm_e_x14";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_e_pins4: pwm-e-pins4 {
> + mux {
> + groups = "pwm_e_x2";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_e_pins5: pwm-e-pins5 {
> + mux {
> + groups = "pwm_e_f";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_e_pins6: pwm-e-pins6 {
> + mux {
> + groups = "pwm_e_a";
> + function = "pwm_e";
> + };
> + };
> +
> + pwm_f_pins1: pwm-f-pins1 {
> + mux {
> + groups = "pwm_f_b";
> + function = "pwm_f";
> + };
> + };
> +
> + pwm_f_pins2: pwm-f-pins2 {
> + mux {
> + groups = "pwm_f_x";
> + function = "pwm_f";
> + };
> + };
> +
> + pwm_f_pins3: pwm-f-pins3 {
> + mux {
> + groups = "pwm_f_f4";
> + function = "pwm_f";
> + };
> + };
> +
> + pwm_f_pins4: pwm-f-pins4 {
> + mux {
> + groups = "pwm_f_f12";
> + function = "pwm_f";
> + };
> + };
> +
> sdio_pins: sdio {
> mux0 {
> groups = "sdcard_d0_x",
> @@ -648,6 +830,28 @@ uart_AO_B: serial@...0 {
> status = "disabled";
> };
>
> + pwm_ab: pwm@...0 {
> + compatible = "amlogic,meson-a1-pwm",
> + "amlogic,meson-s4-pwm";
> + reg = <0x0 0x2400 0x0 0x24>;
> + #pwm-cells = <3>;
> + clocks = <&clkc_periphs CLKID_PWM_A>,
> + <&clkc_periphs CLKID_PWM_B>;
> + power-domains = <&pwrc PWRC_I2C_ID>;
> + status = "disabled";
> + };
> +
> + pwm_cd: pwm@...0 {
> + compatible = "amlogic,meson-a1-pwm",
> + "amlogic,meson-s4-pwm";
> + reg = <0x0 0x2800 0x0 0x24>;
> + #pwm-cells = <3>;
> + clocks = <&clkc_periphs CLKID_PWM_C>,
> + <&clkc_periphs CLKID_PWM_D>;
> + power-domains = <&pwrc PWRC_I2C_ID>;
> + status = "disabled";
> + };
> +
> saradc: adc@...0 {
> compatible = "amlogic,meson-g12a-saradc",
> "amlogic,meson-saradc";
> @@ -732,6 +936,17 @@ sec_AO: ao-secure@...0 {
> amlogic,has-chip-id;
> };
>
> + pwm_ef: pwm@...0 {
> + compatible = "amlogic,meson-a1-pwm",
> + "amlogic,meson-s4-pwm";
> + reg = <0x0 0x5400 0x0 0x24>;
> + #pwm-cells = <3>;
> + clocks = <&clkc_periphs CLKID_PWM_E>,
> + <&clkc_periphs CLKID_PWM_F>;
> + power-domains = <&pwrc PWRC_I2C_ID>;
> + status = "disabled";
> + };
> +
> clkc_pll: pll-clock-controller@...0 {
> compatible = "amlogic,a1-pll-clkc";
> reg = <0 0x7c80 0 0x18c>;
--
Best regards
George
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