This patch adds pwm channel 2 (pwm3) support for mt7981
Signed-off-by: Sam Shih sam.shih@mediatek.com Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- arch/arm/dts/mt7981-emmc-rfb.dts | 8 ++++++++ arch/arm/dts/mt7981-rfb.dts | 8 ++++++++ arch/arm/dts/mt7981-sd-rfb.dts | 8 ++++++++ arch/arm/dts/mt7981.dtsi | 10 ++++++++-- drivers/pwm/pwm-mtk.c | 2 +- 5 files changed, 33 insertions(+), 3 deletions(-)
diff --git a/arch/arm/dts/mt7981-emmc-rfb.dts b/arch/arm/dts/mt7981-emmc-rfb.dts index 303f6707efa..96ecead569b 100644 --- a/arch/arm/dts/mt7981-emmc-rfb.dts +++ b/arch/arm/dts/mt7981-emmc-rfb.dts @@ -95,6 +95,14 @@ }; };
+ /* pin13 as pwm0, pin15 as pwm1, pin7 as pwm2 */ + three_pwm_pins_1: three-pwm-pins { + mux { + function = "pwm"; + groups = "pwm0_0", "pwm1_1", "pwm2"; + }; + }; + mmc0_pins_default: mmc0default { mux { function = "flash"; diff --git a/arch/arm/dts/mt7981-rfb.dts b/arch/arm/dts/mt7981-rfb.dts index 0081d4ed032..d684acf05c3 100644 --- a/arch/arm/dts/mt7981-rfb.dts +++ b/arch/arm/dts/mt7981-rfb.dts @@ -123,6 +123,14 @@ groups = "pwm0_1", "pwm1_0", "pwm2"; }; }; + + /* pin13 as pwm0, pin15 as pwm1, pin7 as pwm2 */ + three_pwm_pins_1: three-pwm-pins { + mux { + function = "pwm"; + groups = "pwm0_0", "pwm1_1", "pwm2"; + }; + }; };
&spi0 { diff --git a/arch/arm/dts/mt7981-sd-rfb.dts b/arch/arm/dts/mt7981-sd-rfb.dts index 565929b6050..41cccf3bbe1 100644 --- a/arch/arm/dts/mt7981-sd-rfb.dts +++ b/arch/arm/dts/mt7981-sd-rfb.dts @@ -95,6 +95,14 @@ }; };
+ /* pin13 as pwm0, pin15 as pwm1, pin7 as pwm2 */ + three_pwm_pins_1: three-pwm-pins { + mux { + function = "pwm"; + groups = "pwm0_0", "pwm1_1", "pwm2"; + }; + }; + mmc0_pins_default: mmc0default { mux { function = "flash"; diff --git a/arch/arm/dts/mt7981.dtsi b/arch/arm/dts/mt7981.dtsi index a9991a121f1..43e505826f5 100644 --- a/arch/arm/dts/mt7981.dtsi +++ b/arch/arm/dts/mt7981.dtsi @@ -137,8 +137,14 @@ <&infracfg CLK_INFRA_PWM1_CK>, <&infracfg CLK_INFRA_PWM2_CK>, <&infracfg CLK_INFRA_PWM3_CK>; - assigned-clocks = <&topckgen CLK_TOP_PWM_SEL>; - assigned-clock-parents = <&topckgen CLK_TOP_CB_CKSQ_40M>; + assigned-clocks = <&topckgen CLK_TOP_PWM_SEL>, + <&infracfg CLK_INFRA_PWM1_SEL>, + <&infracfg CLK_INFRA_PWM2_SEL>, + <&infracfg CLK_INFRA_PWM3_SEL>; + assigned-clock-parents = <&topckgen CLK_TOP_CB_CKSQ_40M>, + <&topckgen CLK_TOP_PWM_SEL>, + <&topckgen CLK_TOP_PWM_SEL>, + <&topckgen CLK_TOP_PWM_SEL>; clock-names = "top", "main", "pwm1", "pwm2", "pwm3"; status = "disabled"; }; diff --git a/drivers/pwm/pwm-mtk.c b/drivers/pwm/pwm-mtk.c index 9776a41ff48..5cf2eba2ba0 100644 --- a/drivers/pwm/pwm-mtk.c +++ b/drivers/pwm/pwm-mtk.c @@ -192,7 +192,7 @@ static const struct mtk_pwm_soc mt7629_data = { };
static const struct mtk_pwm_soc mt7981_data = { - .num_pwms = 2, + .num_pwms = 3, .pwm45_fixup = false, .reg_ver = PWM_REG_V2, };