开发记录

kernel/include/dt-bindings/suspend/rockchip-rk3568.h 记录了设备树中支持的各种模式

rockchip_suspend: rockchip-suspend {
	compatible = "rockchip,pm-rk3568";
	status = "disabled";
	rockchip,sleep-debug-en = <1>;
	rockchip,sleep-mode-config = <
		(0
		| RKPM_SLP_ARMOFF_LOGOFF
		| RKPM_SLP_CENTER_OFF
		| RKPM_SLP_HW_PLLS_OFF
		| RKPM_SLP_PMUALIVE_32K
		| RKPM_SLP_OSC_DIS
		| RKPM_SLP_PMIC_LP
		| RKPM_SLP_32K_PVTM
		)
	>;
	rockchip,wakeup-config = <
		(0
		| RKPM_GPIO_WKUP_EN
		)
	>;
};

设备树中wifi模组相关节点 kernel/arch/arm64/boot/dts/rockchip/rk3568-evb.dtsi

sdio_pwrseq: sdio-pwrseq { compatible = “mmc-pwrseq-simple”; clocks = <&rk809 1>; clock-names = “ext_clock”; pinctrl-names = “default”; pinctrl-0 = <&wifi_enable_h>;

	/*
	 * On the module itself this is one of these (depending
	 * on the actual card populated):
	 * - SDIO_RESET_L_WL_REG_ON
	 * - PDN (power down when low)
	 */
	post-power-on-delay-ms = <200>;
	reset-gpios = <&gpio3 RK_PD4 GPIO_ACTIVE_LOW>;
};

wireless_wlan: wireless-wlan {
	compatible = "wlan-platdata";
	rockchip,grf = <&grf>;
	wifi_chip_type = "AIC8800";
	status = "okay";
};

wireless_bluetooth: wireless-bluetooth { compatible = “bluetooth-platdata”; clocks = <&rk809 1>; clock-names = “ext_clock”; //wifi-bt-power-toggle; uart_rts_gpios = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>; //BT,power_gpio = <&gpio2 RK_PB7 GPIO_ACTIVE_HIGH>; pinctrl-names = “default”, “rts_gpio”; pinctrl-0 = <&uart1m0_rtsn>; pinctrl-1 = <&uart1_gpios>; BT,reset_gpio = <&gpio2 RK_PB7 GPIO_ACTIVE_HIGH>; BT,wake_gpio = <&gpio2 RK_PC0 GPIO_ACTIVE_HIGH>; BT,wake_host_irq = <&gpio2 RK_PC1 GPIO_ACTIVE_HIGH>; status = “okay”; };

sdio-pwrseq {
	wifi_enable_h: wifi-enable-h {
		rockchip,pins = <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
		//WIFI_REG_ON_H_GPIO2_B1
	};
};

wireless-bluetooth {
	uart8_gpios: uart8-gpios {
		rockchip,pins = <2 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
	};
};

查看驱动的相关函数，只有btlpm相关内容中解析了设备树中的内容？？ if (!of_property_read_bool(np, “wakeup-source”))

if (!of_property_read_u32(np, “uart_index”, &val))

bsi->host_wake = of_get_named_gpio_flags(np, “bt_hostwake”, 0, &config);