arm64: dts: qcom: Add Lenovo Tab P11 (J606F/XiaoXin Pad) dts

Add an initial device tree for the Lenovo Tab P11. Currently it
enables:

- simplefb
- SD Card slot via SDHCI2
- gpio-keys & PON keys
- UFS
- RPM regulators
- USB2

This has been validated with a rev (62) device. You can check yours
next to the serial no. on the sticker in the lower portion of the
back side of your tablet.

To get a successful boot run:

cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/\
sm6115p-lenovo-j606f.dtb > .Image.gz-dtb

~/mkbootimg/mkbootimg.py \
--kernel .Image.gz-dtb \
--ramdisk some/initrd.img \
--pagesize 4096 \
--base 0x0 \
--kernel_offset 0x8000 \
--ramdisk_offset 0x1000000 \
--tags_offset 0x100 \
--cmdline 'SOME_CMDLINE' \
--dtb_offset 0x1f00000 \
--header_version 1 \
--os_version 11 \
--os_patch_level 2022-11 \
-o j606f.img

fastboot flash boot j606f.img
fastboot flash dtbo empty.img
fastboot flash recovery empty.img
fastboot reboot

Where empty.img is 2 zero-bytes.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221208201401.530555-5-konrad.dybcio@linaro.org

arch/arm64/boot/dts/qcom/Makefile

@@ -156,6 +156,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-shift-axolotl.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-samsung-w737.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm4250-oneplus-billie2.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm6115p-lenovo-j606f.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-sony-xperia-seine-pdx201.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6350-sony-xperia-lena-pdx213.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6375-sony-xperia-murray-pdx225.dtb

arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2022 Linaro Limited
+ */
+
+/dts-v1/;
+
+#include "sm6115.dtsi"
+#include "pm6125.dtsi"
+
+/ {
+	model = "Lenovo Tab P11";
+	compatible = "lenovo,j606f", "qcom,sm6115p", "qcom,sm6115";
+	chassis-type = "tablet";
+
+	/* required for bootloader to select correct board */
+	qcom,msm-id = <445 0x10000>, <420 0x10000>;
+	qcom,board-id = <34 3>;
+
+	aliases {
+		mmc0 = &sdhc_2;
+	};
+
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer0: framebuffer@5c000000 {
+			compatible = "simple-framebuffer";
+			reg = <0 0x5c000000 0 (2000 * 1200 * 4)>;
+			width = <1200>;
+			height = <2000>;
+			stride = <(1200 * 4)>;
+			format = "a8r8g8b8";
+			clocks = <&gcc GCC_DISP_HF_AXI_CLK>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&vol_up_n>;
+
+		key-volume-up {
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+			gpios = <&pm6125_gpio 5 GPIO_ACTIVE_LOW>;
+			debounce-interval = <15>;
+			linux,can-disable;
+			gpio-key,wakeup;
+		};
+	};
+};
+
+&dispcc {
+	/* HACK: disable until a panel driver is ready to retain simplefb */
+	status = "disabled";
+};
+
+&pm6125_gpio {
+	vol_up_n: vol-up-n-state {
+		pins = "gpio5";
+		function = "normal";
+		power-source = <0>;
+		bias-pull-up;
+		input-enable;
+	};
+};
+
+&pon_pwrkey {
+	status = "okay";
+};
+
+&pon_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
+&rpm_requests {
+	regulators-0 {
+		compatible = "qcom,rpm-pm6125-regulators";
+
+		pm6125_s6: s6 {
+			regulator-min-microvolt = <304000>;
+			regulator-max-microvolt = <1456000>;
+		};
+
+		pm6125_s7: s7 {
+			regulator-min-microvolt = <1280000>;
+			regulator-max-microvolt = <2080000>;
+		};
+
+		pm6125_s8: s8 {
+			regulator-min-microvolt = <1064000>;
+			regulator-max-microvolt = <1304000>;
+		};
+
+		pm6125_l1: l1 {
+			regulator-min-microvolt = <952000>;
+			regulator-max-microvolt = <1152000>;
+		};
+
+		pm6125_l4: l4 {
+			regulator-min-microvolt = <488000>;
+			regulator-max-microvolt = <1000000>;
+		};
+
+		pm6125_l5: l5 {
+			regulator-min-microvolt = <1648000>;
+			/* 3.056V capped to 2.96V for SDHCI */
+			regulator-max-microvolt = <2960000>;
+			regulator-allow-set-load;
+			/* Broken hw, this one can't be turned off or SDHCI will break! */
+			regulator-always-on;
+		};
+
+		pm6125_l6: l6 {
+			regulator-min-microvolt = <576000>;
+			regulator-max-microvolt = <656000>;
+		};
+
+		pm6125_l7: l7 {
+			/* 1.2V-1.304V fixed at 1.256V for SDHCI bias */
+			regulator-min-microvolt = <1256000>;
+			regulator-max-microvolt = <1256000>;
+			/*
+			 * TODO: SDHCI seems to also work with this one turned off, however
+			 * there exists a possibility that it may not work with some very
+			 * specific SDCard types, perhaps validating this against a wide
+			 * range of models could rule that out, saving some power would
+			 * certainly be nice..
+			 */
+			regulator-always-on;
+		};
+
+		pm6125_l8: l8 {
+			regulator-min-microvolt = <400000>;
+			regulator-max-microvolt = <728000>;
+		};
+
+		pm6125_l9: l9 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2000000>;
+		};
+
+		pm6125_l10: l10 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <1904000>;
+		};
+
+		pm6125_l11: l11 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <1952000>;
+		};
+
+		pm6125_l12: l12 {
+			regulator-min-microvolt = <1624000>;
+			regulator-max-microvolt = <1984000>;
+		};
+
+		pm6125_l13: l13 {
+			regulator-min-microvolt = <1504000>;
+			regulator-max-microvolt = <1952000>;
+		};
+
+		pm6125_l14: l14 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <1904000>;
+		};
+
+		pm6125_l15: l15 {
+			regulator-min-microvolt = <2920000>;
+			regulator-max-microvolt = <3232000>;
+		};
+
+		pm6125_l16: l16 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <1904000>;
+		};
+
+		pm6125_l17: l17 {
+			regulator-min-microvolt = <1152000>;
+			regulator-max-microvolt = <1384000>;
+		};
+
+		pm6125_l18: l18 {
+			regulator-min-microvolt = <1104000>;
+			regulator-max-microvolt = <1312000>;
+		};
+
+		pm6125_l19: l19 {
+			regulator-min-microvolt = <1624000>;
+			regulator-max-microvolt = <3304000>;
+		};
+
+		pm6125_l20: l20 {
+			regulator-min-microvolt = <1624000>;
+			regulator-max-microvolt = <3304000>;
+		};
+
+		pm6125_l21: l21 {
+			regulator-min-microvolt = <2400000>;
+			regulator-max-microvolt = <3600000>;
+		};
+
+		pm6125_l22: l22 {
+			regulator-min-microvolt = <2952000>;
+			/* 3.304V capped to 2.96V for SDHCI */
+			regulator-max-microvolt = <2960000>;
+			regulator-allow-set-load;
+			/* Broken hw, this one can't be turned off or SDHCI will break! */
+			regulator-always-on;
+		};
+
+		pm6125_l23: l23 {
+			regulator-min-microvolt = <3200000>;
+			regulator-max-microvolt = <3400000>;
+		};
+
+		pm6125_l24: l24 {
+			regulator-min-microvolt = <2704000>;
+			regulator-max-microvolt = <3600000>;
+		};
+	};
+};
+
+&sdhc_2 {
+	cd-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&sdc2_state_on &sdc2_gate_pin>;
+	pinctrl-1 = <&sdc2_state_off>;
+	vmmc-supply = <&pm6125_l22>;
+	vqmmc-supply = <&pm6125_l5>;
+	no-sdio;
+	no-mmc;
+	status = "okay";
+};
+
+&sleep_clk {
+	clock-frequency = <32764>;
+};
+
+&tlmm {
+	gpio-reserved-ranges = <14 4>;
+
+	/*
+	 * This is a wholly undocumented pin (other than a single vague "pwr-gpios" reference)
+	 * that needs to be toggled for the SD Card slot to work properly..
+	 */
+	sdc2_gate_pin: sdc2-gate-state {
+		pins = "gpio45";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+		output-high;
+	};
+};
+
+&ufs_mem_hc {
+	vcc-supply = <&pm6125_l24>;
+	vcc-max-microamp = <600000>;
+	vccq2-supply = <&pm6125_l11>;
+	vccq2-max-microamp = <600000>;
+	status = "okay";
+};
+
+&ufs_mem_phy {
+	vdda-phy-supply = <&pm6125_l4>;
+	vdda-pll-supply = <&pm6125_l12>;
+	vddp-ref-clk-supply = <&pm6125_l18>;
+	status = "okay";
+};
+
+&usb_1 {
+	status = "okay";
+};
+
+&usb_1_hsphy {
+	vdd-supply = <&pm6125_l4>;
+	vdda-pll-supply = <&pm6125_l12>;
+	vdda-phy-dpdm-supply = <&pm6125_l15>;
+	status = "okay";
+};
+
+&xo_board {
+	clock-frequency = <19200000>;
+};