The Smartlabs SML-5442TW is broadly similar to the P231 reference design
but with the following differences:

- Yellow and Blue front-panel LEDs are available but disabled
- Red/Green LED is used to signal off/on status
- GPIOX_17 is set high to enable the QCA9377 wireless module
- uart_AO can be accessed after opening the case; soldered pins exist

Signed-off-by: Christian Hewitt <[email protected]>
---
 arch/arm64/boot/dts/amlogic/Makefile               |   1 +
 .../boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts | 316 +++++++++++++++++++++
 2 files changed, 317 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts

diff --git a/arch/arm64/boot/dts/amlogic/Makefile 
b/arch/arm64/boot/dts/amlogic/Makefile
index c31f29d6..37d7dbd 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -18,6 +18,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-nexbox-a95x.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p230.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p231.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-sml5442tw.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s805x-p241.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-p281.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-tx3-mini.dtb
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts 
b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts
new file mode 100644
index 0000000..a081984
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2016 Endless Computers, Inc.
+ * Author: Carlo Caione <[email protected]>
+ * Copyright (c) 2018 BayLibre, SAS
+ * Author: Neil Armstrong <[email protected]>
+ */
+
+/dts-v1/;
+
+#include "meson-gxl-s905d.dtsi"
+
+/ {
+       compatible = "smartlabs,sml5442tw", "amlogic,s905d", 
"amlogic,meson-gxl";
+       model = "Smartlabs SML-5442TW";
+
+       aliases {
+               serial0 = &uart_AO;
+               serial1 = &uart_A;
+               ethernet0 = &ethmac;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x0 0x0 0x80000000>;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               yellow {
+                       label = "sml5442tw:yellow";
+                       gpios = <&gpio_ao GPIOAO_6 GPIO_ACTIVE_HIGH>;
+                       default-state = "off";
+               };
+
+               blue {
+                       label = "sml5442tw:blue";
+                       gpios = <&gpio GPIODV_28 GPIO_ACTIVE_HIGH>;
+                       default-state = "off";
+               };
+
+               green {
+                       label = "sml5442tw:green";
+                       gpios = <&gpio_ao GPIOAO_9 GPIO_ACTIVE_HIGH>;
+                       default-state = "on";
+               };
+
+               red {
+                       label = "sml5442tw:red";
+                       gpios = <&gpio GPIODV_27 GPIO_ACTIVE_HIGH>;
+                       default-state = "off";
+               };
+       };
+
+       hdmi_5v: regulator-hdmi-5v {
+               compatible = "regulator-fixed";
+
+               regulator-name = "HDMI_5V";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+
+               gpio = <&gpio GPIOH_3 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+               regulator-always-on;
+       };
+
+       vddio_ao18: regulator-vddio_ao18 {
+               compatible = "regulator-fixed";
+               regulator-name = "VDDIO_AO18";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+       };
+
+       vddio_boot: regulator-vddio_boot {
+               compatible = "regulator-fixed";
+               regulator-name = "VDDIO_BOOT";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+       };
+
+       vddao_3v3: regulator-vddao_3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "VDDAO_3V3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       vcc_3v3: regulator-vcc_3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "VCC_3V3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       emmc_pwrseq: emmc-pwrseq {
+               compatible = "mmc-pwrseq-emmc";
+               reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+       };
+
+       wifi32k: wifi32k {
+               compatible = "pwm-clock";
+               #clock-cells = <0>;
+               clock-frequency = <32768>;
+               pwms = <&pwm_ef 0 30518 0>; /* PWM_E at 32.768KHz */
+       };
+
+       sdio_pwrseq: sdio-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>;
+               clocks = <&wifi32k>;
+               clock-names = "ext_clock";
+       };
+
+       cvbs-connector {
+               compatible = "composite-video-connector";
+
+               port {
+                       cvbs_connector_in: endpoint {
+                               remote-endpoint = <&cvbs_vdac_out>;
+                       };
+               };
+       };
+
+       hdmi-connector {
+               compatible = "hdmi-connector";
+               type = "a";
+
+               port {
+                       hdmi_connector_in: endpoint {
+                               remote-endpoint = <&hdmi_tx_tmds_out>;
+                       };
+               };
+       };
+
+       sound {
+               compatible = "simple-audio-card";
+               simple-audio-card,name = "meson-gx-audio";
+
+               simple-audio-card,dai-link@0 {
+                       /* HDMI Output */
+                       format = "i2s";
+                       mclk-fs = <256>;
+                       bitclock-master =  <&i2s_dai>;
+                       frame-master = <&i2s_dai>;
+                       plat {
+                               sound-dai = <&aiu_i2s_dma>;
+                       };
+
+                       cpu {
+                               sound-dai = <&i2s_dai>;
+                       };
+
+                       codec {
+                               sound-dai = <&hdmi_tx>;
+                       };
+               };
+       };
+};
+
+&cec_AO {
+       status = "okay";
+       pinctrl-0 = <&ao_cec_pins>;
+       pinctrl-names = "default";
+       hdmi-phandle = <&hdmi_tx>;
+};
+
+&cvbs_vdac_port {
+       cvbs_vdac_out: endpoint {
+               remote-endpoint = <&cvbs_connector_in>;
+       };
+};
+
+&ethmac {
+       status = "okay";
+       phy-mode = "rmii";
+       phy-handle = <&internal_phy>;
+};
+
+/* This will enable the bluetooth module */
+&gpio {
+       bt-en {
+               gpio-hog;
+               gpios = <GPIOX_17 GPIO_ACTIVE_HIGH>;
+               output-high;
+               line-name = "bt-en";
+       };
+};
+
+&hdmi_tx {
+       status = "okay";
+       pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
+       pinctrl-names = "default";
+       hdmi-supply = <&hdmi_5v>;
+};
+
+&hdmi_tx_tmds_port {
+       hdmi_tx_tmds_out: endpoint {
+               remote-endpoint = <&hdmi_connector_in>;
+       };
+};
+
+&i2c_A {
+       status = "okay";
+       pinctrl-0 = <&i2c_a_pins>;
+       pinctrl-names = "default";
+};
+
+&internal_phy {
+       pinctrl-0 = <&eth_link_led_pins>, <&eth_act_led_pins>;
+       pinctrl-names = "default";
+};
+
+&ir {
+       status = "okay";
+       pinctrl-0 = <&remote_input_ao_pins>;
+       pinctrl-names = "default";
+       linux,rc-map-name = "rc-o2cz-khamsin";
+};
+
+&pwm_ef {
+       status = "okay";
+       pinctrl-0 = <&pwm_e_pins>;
+       pinctrl-names = "default";
+       clocks = <&clkc CLKID_FCLK_DIV4>;
+       clock-names = "clkin0";
+};
+
+&saradc {
+       status = "okay";
+       vref-supply = <&vddio_ao18>;
+};
+
+/* Wireless SDIO Module */
+&sd_emmc_a {
+       status = "okay";
+       pinctrl-0 = <&sdio_pins>;
+       pinctrl-1 = <&sdio_clk_gate_pins>;
+       pinctrl-names = "default", "clk-gate";
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       bus-width = <4>;
+       cap-sd-highspeed;
+       max-frequency = <100000000>;
+
+       non-removable;
+       disable-wp;
+
+       mmc-pwrseq = <&sdio_pwrseq>;
+
+       vmmc-supply = <&vddao_3v3>;
+       vqmmc-supply = <&vddio_boot>;
+};
+
+/* SD card */
+&sd_emmc_b {
+       status = "okay";
+       pinctrl-0 = <&sdcard_pins>;
+       pinctrl-1 = <&sdcard_clk_gate_pins>;
+       pinctrl-names = "default", "clk-gate";
+
+       bus-width = <4>;
+       cap-sd-highspeed;
+       max-frequency = <100000000>;
+       disable-wp;
+
+       cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
+       cd-inverted;
+
+       vmmc-supply = <&vddao_3v3>;
+       vqmmc-supply = <&vddio_boot>;
+};
+
+/* eMMC */
+&sd_emmc_c {
+       status = "okay";
+       pinctrl-0 = <&emmc_pins>, <&emmc_ds_pins>;
+       pinctrl-1 = <&emmc_clk_gate_pins>;
+       pinctrl-names = "default", "clk-gate";
+
+       bus-width = <8>;
+       cap-mmc-highspeed;
+       max-frequency = <100000000>;
+       non-removable;
+       disable-wp;
+       mmc-ddr-1_8v;
+       mmc-hs200-1_8v;
+
+       mmc-pwrseq = <&emmc_pwrseq>;
+       vmmc-supply = <&vcc_3v3>;
+       vqmmc-supply = <&vddio_boot>;
+};
+
+/* This is connected to the Bluetooth module: */
+&uart_A {
+       status = "okay";
+       pinctrl-0 = <&uart_a_pins>, <&uart_a_cts_rts_pins>;
+       pinctrl-names = "default";
+       uart-has-rtscts;
+};
+
+/* This UART is brought out to the debug header */
+&uart_AO {
+       status = "okay";
+       pinctrl-0 = <&uart_ao_a_pins>;
+       pinctrl-names = "default";
+};
+
+&usb0 {
+       status = "okay";
+};
-- 
2.7.4

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