[PATCH v5 7/9] arm64: dts: amlogic: t7: khadas-vim4: Add SDIO power sequence and WiFi clock
From: Ronald Claveau <hidden>
Date: 2026-03-26 10:02:02
Also in:
linux-amlogic, linux-devicetree, linux-mmc, linux-wireless, lkml
Subsystem:
arm/amlogic meson soc support, the rest · Maintainers:
Neil Armstrong, Kevin Hilman, Linus Torvalds
Add the SDIO power sequence node using mmc-pwrseq-simple and a 32.768kHz PWM-based clock required by the Wi-Fi module. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Ronald Claveau <redacted> --- .../dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
index 2450084d37642..770f06b0b16c7 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts@@ -67,6 +67,15 @@ sd_3v3: regulator-sdcard-3v3 { regulator-always-on; }; + sdio_pwrseq: sdio-pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>; + post-power-on-delay-ms = <500>; + power-off-delay-us = <200000>; + clocks = <&wifi32k>; + clock-names = "ext_clock"; + }; + vcc5v: regulator-vcc-5v { compatible = "regulator-fixed"; regulator-name = "VCC5V";
@@ -135,6 +144,19 @@ vddio_c: regulator-gpio-c { states = <1800000 1 3300000 0>; }; + + wifi32k: wifi32k { + compatible = "pwm-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + pwms = <&pwm_ab 0 30518 0>; + }; +}; + +&pwm_ab { + status = "okay"; + pinctrl-0 = <&pwm_a_pins>; + pinctrl-names = "default"; }; &uart_a {
--
2.49.0