Add binding and basic support for the SD/eMMC controller on Amlogic
S905/GXBB devices.
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxx>
---
.../devicetree/bindings/mmc/amlogic,meson-gxbb.txt | 29 +++++++++
.../arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 74 ++++++++++++++++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 71 +++++++++++++++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 30 ++++++++-
4 files changed, 203 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/mmc/amlogic,meson-gxbb.txt
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gxbb.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-gxbb.txt
new file mode 100644
index 000000000000..2bfdf47018c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gxbb.txt
@@ -0,0 +1,29 @@
+Amlogic SD / eMMC controller for S905/GXBB family SoCs
+
+The MMC 5.1 compliant host controller on Amlogic provides the
+interface for SD, eMMC and SDIO devices.
+
+This file documents the properties in addition to those available in
+the MMC core bindings, documented by mmc.txt.
+
+Required properties:
+- compatible : contains "amlogic,meson-gxbb"
+- clocks : A list of phandle + clock-specifier pairs for the clocks listed in clock-names.
+- clock-names: Should contain the following:
+ "core" - Main peripheral bus clock
+ "clkin0" - Parent clock of internal mux
+ "clkin1" - Other parent clock of internal mux
+ The driver has an interal mux clock which switches between clkin0 and clkin1 depending on the
+ clock rate requested by the MMC core.
+
+Example:
+
+ sd_emmc_a: mmc@70000 {
+ compatible = "amlogic,meson-gxbb-mmc";
+ reg = <0x0 0x70000 0x0 0x2000>;
+ interrupts = < GIC_SPI 216 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>, <&clkc CLKID_FCLK_DIV2>;
+ clock-names = "core", "clkin0", "clkin1";
+ pinctrl-0 = <&emmc_pins>;
+ };
+
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 90a84c514d3d..a49f7f77eb34 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -73,6 +73,45 @@
default-state = "off";
};
};
+
+ mmc_iv: gpio-regulator {
+ compatible = "regulator-gpio";
+
+ regulator-name = "mmc-gpio-supply";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpios = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_HIGH>;
+ gpio-states = <0 1>;
+
+ /*
+ * Based on ODROID-C2 schematics:
+ * signal name: IO_TF_3V3N_1V8, GPIOAO bit 3
+ */
+ states = <3300000 0
+ 1800000 1>;
+ };
+
+ vcc1v8: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC1V8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+
+ vcc3v3: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ emmc_pwrseq: emmc-pwrseq {
+ compatible = "mmc-pwrseq-emmc";
+ reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+ };
};
&uart_AO {
@@ -87,3 +126,38 @@
pinctrl-names = "default";
};
+&sd_emmc_b {
+ status = "okay";
+ pinctrl-0 = <&sdcard_pins>;
+ pinctrl-names = "default";
+
+ bus-width = <4>;
+ cap-sd-highspeed;
+ max-frequency = <100000000>;
+
+ cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
+ cd-inverted;
+
+ vmmc-supply = <&mmc_iv>;
+ voltage-ranges = <1800 3300>;
+};
+
+&sd_emmc_c {
+ status = "okay";
+ pinctrl-0 = <&emmc_pins>;
+ pinctrl-names = "default";
+
+ bus-width = <8>;
+ cap-sd-highspeed;
+ max-frequency = <200000000>;
+ non-removable;
+ disable-wp;
+ cap-mmc-highspeed;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+
+ mmc-pwrseq = <&emmc_pwrseq>;
+ voltage-ranges = <1800 3300>;
+ vmmc-supply = <&vcc3v3>;
+ vmmcq-sumpply = <&vcc1v8>;
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
index f4f30f674b4c..63d95d136aec 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
@@ -57,6 +57,42 @@
device_type = "memory";
reg = <0x0 0x0 0x0 0x40000000>;
};
+
+ mmc_iv: gpio-regulator {
+ compatible = "regulator-gpio";
+
+ regulator-name = "mmc-gpio-supply";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpios = <&gpio_ao GPIOAO_5 GPIO_ACTIVE_HIGH>;
+ gpio-states = <0 1>;
+
+ /* Based on P200 schematics, signal CARD_1.8V/3.3V_CTR */
+ states = <1800000 0
+ 3300000 1>;
+ };
+
+ vddio_boot: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VDDIO_BOOT";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+
+ vcc_3v3: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ emmc_pwrseq: emmc-pwrseq {
+ compatible = "mmc-pwrseq-emmc";
+ reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+ };
};
/* This UART is brought out to the DB9 connector */
@@ -72,3 +108,38 @@
pinctrl-names = "default";
};
+&sd_emmc_b {
+ status = "okay";
+ pinctrl-0 = <&sdcard_pins>;
+ pinctrl-names = "default";
+
+ bus-width = <4>;
+ cap-sd-highspeed;
+ max-frequency = <100000000>;
+
+ cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
+ cd-inverted;
+
+ voltage-ranges = <1800 3300>;
+ vmmc-supply = <&mmc_iv>;
+};
+
+&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>;
+ voltage-ranges = <1800 3300>;
+ vmmc-supply = <&vcc_3v3>;
+ vmmcq-sumpply = <&vddio_boot>;
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 35c8b2beb05c..2e48fa1e0364 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -247,7 +247,8 @@
mux {
groups = "emmc_nand_d07",
"emmc_cmd",
- "emmc_clk";
+ "emmc_clk",
+ "emmc_ds";
function = "emmc";
};
};
@@ -330,6 +331,33 @@
#address-cells = <2>;
#size-cells = <2>;
ranges = <0x0 0x0 0x0 0xd0000000 0x0 0x200000>;
+
+ sd_emmc_a: mmc@70000 {
+ compatible = "amlogic,meson-gxbb-mmc";
+ reg = <0x0 0x70000 0x0 0x2000>;
+ interrupts = < GIC_SPI 216 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>, <&clkc CLKID_FCLK_DIV2>;
+ clock-names = "core", "clkin0", "clkin1";
+ status = "disabled";
+ };
+
+ sd_emmc_b: mmc@72000 {
+ compatible = "amlogic,meson-gxbb-mmc";
+ reg = <0x0 0x72000 0x0 0x2000>;
+ interrupts = < GIC_SPI 217 IRQ_TYPE_EDGE_RISING >;
+ clocks = <&clkc CLKID_SD_EMMC_B>, <&xtal>, <&clkc CLKID_FCLK_DIV2>;
+ clock-names = "core", "clkin0", "clkin1";
+ status = "disabled";
+ };
+
+ sd_emmc_c: mmc@74000 {
+ compatible = "amlogic,meson-gxbb-mmc";
+ reg = <0x0 0x74000 0x0 0x2000>;
+ interrupts = < GIC_SPI 218 IRQ_TYPE_EDGE_RISING >;
+ clocks = <&clkc CLKID_SD_EMMC_C>, <&xtal>, <&clkc CLKID_FCLK_DIV2>;
+ clock-names = "core", "clkin0", "clkin1";
+ status = "disabled";
+ };
};
ethmac: ethernet@c9410000 {
--
2.9.0
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