Re: [PATCH v2 1/2] ARM64: dts: meson-gxbb: add MMC support
From: Karsten Merker <hidden>
Date: 2016-08-05 03:46:23
Also in:
linux-mmc
On Wed, Aug 03, 2016 at 04:18:42PM -0700, Kevin Hilman wrote:
quoted hunk
Add binding and basic support for the SD/eMMC controller on Amlogic S905/GXBB devices. Signed-off-by: Kevin Hilman <khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> --- .../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 | 36 ++++++++++- 4 files changed, 209 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/mmc/amlogic,meson-gxbb.txtdiff --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"
I assume that should be "amlogic,meson-gxbb-mmc" instead of "amlogic,meson-gxbb", shouldn't it?
+- 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>;
+ };
+Regards, Karsten -- Gem. Par. 28 Abs. 4 Bundesdatenschutzgesetz widerspreche ich der Nutzung sowie der Weitergabe meiner personenbezogenen Daten für Zwecke der Werbung sowie der Markt- oder Meinungsforschung. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html