[PATCH 1/1] arm64: dts: meson: a1: add definitions for meson pwm

[George Stark]

From: George Stark <GNStark@xxxxxxxxxxxxxx>

The chip has 3 dual channel PWM modules AB, CD, 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@xxxxxxxxxxxxxx>
Signed-off-by: Dmitry Rokosov <ddrokosov@xxxxxxxxxxxxxxxxx>
---

This patch depends on [1].

Links:
    [1] https://lore.kernel.org/linux-pwm/20240423161006.2522351-1-gnstark@xxxxxxxxxxxxxxxxx/T/#t

 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 212 ++++++++++++++++++++++
 1 file changed, 212 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index 6caeb97d6d3e..641180514bce 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 +830,26 @@ uart_AO_B: serial@2000 {
 				status = "disabled";
 			};

+			pwm_ab: pwm@2400 {
+				compatible = "amlogic,meson-a1-pwm";
+				reg = <0x0 0x2400 0x0 0x20>;
+				#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@2800 {
+				compatible = "amlogic,meson-a1-pwm";
+				reg = <0x0 0x2800 0x0 0x20>;
+				#pwm-cells = <3>;
+				clocks = <&clkc_periphs CLKID_PWM_C>,
+					 <&clkc_periphs CLKID_PWM_D>;
+				power-domains = <&pwrc PWRC_I2C_ID>;
+				status = "disabled";
+			};
+
 			saradc: adc@2c00 {
 				compatible = "amlogic,meson-g12a-saradc",
 					"amlogic,meson-saradc";
@@ -732,6 +934,16 @@ sec_AO: ao-secure@5a20 {
 				amlogic,has-chip-id;
 			};

+			pwm_ef: pwm@5400 {
+				compatible = "amlogic,meson-a1-pwm";
+				reg = <0x0 0x5400 0x0 0x20>;
+				#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@7c80 {
 				compatible = "amlogic,a1-pll-clkc";
 				reg = <0 0x7c80 0 0x18c>;
--
2.25.1