arm64: dts: meson: a1: add definitions for meson PWM

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@salutedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240710234116.2370655-4-gnstark@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index e5366d4239b13a3d0d5caaab3115f15ea74990b3..73dbeee982ee91eabdafa262f45b8ca8ab54db07 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -245,6 +245,188 @@
                                        };
                                };
 
+                               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",
@@ -340,6 +522,28 @@
                                status = "disabled";
                        };
 
+                       pwm_ab: pwm@2400 {
+                               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@2800 {
+                               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@2c00 {
                                compatible = "amlogic,meson-g12a-saradc",
                                        "amlogic,meson-saradc";
@@ -423,6 +627,17 @@
                                amlogic,has-chip-id;
                        };
 
+                       pwm_ef: pwm@5400 {
+                               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@7c80 {
                                compatible = "amlogic,a1-pll-clkc";
                                reg = <0 0x7c80 0 0x18c>;