All boards from the Tronsmart Vega S95 series are sharing similar MMC
based hardware.
sd_emmc_a is used to connect a Broadcom based SDIO wifi card (supported
by the brcmfmac driver). The 32.768KHz LPO clock for the wifi chip is
generated by PWM_E.
sd_emmc_b is routed to the SD-card. Unlike p20x there is no GPIO
regulator, meaning it only supports 3.3V (which seems to be hard-wired).
The eMMC chip is connected to sd_emmc_c and is implemented similar to
the meson-gxbb-p20x boards (meaning that hard-wired fixed regulators
are used).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
---
.../boot/dts/amlogic/meson-gxbb-vega-s95.dtsi | 104 +++++++++++++++++++++
1 file changed, 104 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
index e93221a..e59ad30 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi
@@ -65,6 +65,39 @@
enable-active-high;
};
+ vcc_3v3: regulator-vcc_3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcc_1v8: regulator-vcc_1v8 {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC_1V8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ 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>,
+ <&gpio GPIOX_20 GPIO_ACTIVE_LOW>;
+ clocks = <&wifi32k>;
+ clock-names = "ext_clock";
+ };
};
&uart_AO {
@@ -102,3 +135,74 @@
&usb1 {
status = "okay";
};
+
+/* Wireless SDIO Module */
+&sd_emmc_a {
+ status = "okay";
+ pinctrl-0 = <&sdio_pins &sdio_irq_pins>;
+ pinctrl-names = "default";
+ #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 = <&vcc_3v3>;
+ vqmmc-supply = <&vcc_1v8>;
+
+ brcmf: bcrmf@1 {
+ reg = <1>;
+ compatible = "brcm,bcm4329-fmac";
+ };
+};
+
+/* SD card */
+&sd_emmc_b {
+ status = "okay";
+ pinctrl-0 = <&sdcard_pins>;
+ pinctrl-names = "default";
+
+ bus-width = <4>;
+ cap-sd-highspeed;
+ max-frequency = <100000000>;
+ disable-wp;
+
+ cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
+ cd-inverted;
+
+ vmmc-supply = <&vcc_3v3>;
+};
+
+/* eMMC */
+&sd_emmc_c {
+ status = "okay";
+ pinctrl-0 = <&emmc_pins>;
+ pinctrl-names = "default";
+
+ bus-width = <8>;
+ cap-sd-highspeed;
+ cap-mmc-highspeed;
+ max-frequency = <200000000>;
+ non-removable;
+ disable-wp;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+
+ mmc-pwrseq = <&emmc_pwrseq>;
+ vmmc-supply = <&vcc_3v3>;
+ vmmcq-sumpply = <&vcc_1v8>;
+};
+
+&pwm_ef {
+ status = "okay";
+ pinctrl-0 = <&pwm_e_pins>;
+ pinctrl-names = "default";
+ clocks = <&clkc CLKID_FCLK_DIV4>;
+ clock-names = "clkin0";
+};
--
2.10.2
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