[PATCH 2/4] mmc: dt-bindings: update Mediatek MMC bindings

Chaotian Jing
2015-10-13T09:37:56Z

Add 400Mhz clock source for HS400 mode

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
---
Documentation/devicetree/bindings/mmc/mtk-sd.txt | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
index a1adfa4..745bee2 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
@@ -17,6 +17,11 @@ Required properties:
- vmmc-supply: power to the Core
- vqmmc-supply: power to the IO

+Optional properties:
+- clocks: 400mhz clock source for HS400
+- clock-names: "400mhz"
+- hs400-ds-delay: HS400 DS delay setting
+
Examples:
mmc0: mmc@11230000 {
compatible = "mediatek,mt8173-mmc", "mediatek,mt8135-mmc";
@@ -24,9 +29,12 @@ mmc0: mmc@11230000 {
interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
vmmc-supply = <&mt6397_vemc_3v3_reg>;
vqmmc-supply = <&mt6397_vio18_reg>;
- clocks = <&pericfg CLK_PERI_MSDC30_0>, <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
- clock-names = "source", "hclk";
+ clocks = <&pericfg CLK_PERI_MSDC30_0>,
+ <&topckgen CLK_TOP_MSDC50_0_H_SEL>,
+ <&topckgen CLK_TOP_MSDCPLL_D2> ;
+ clock-names = "source", "hclk", "400mhz";
pinctrl-names = "default", "state_uhs";
pinctrl-0 = <&mmc0_pins_default>;
pinctrl-1 = <&mmc0_pins_uhs>;
+ hs400-ds-delay = <0x14015>;
};
--
1.8.1.1.dirty