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Commit f97ee8f5 authored by Baolin Wang's avatar Baolin Wang Committed by Ulf Hansson
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dt-bindings: mmc: sprd: Add pinctrl support 



When changing SD card voltage signal for Spreadtrum SD host controller,
it also need to switch related pin's state. Thus add pinctrl properties'
description in documentation.

Signed-off-by: default avatarBaolin Wang <baolin.wang@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent eef9e0a6

Documentation/devicetree/bindings/mmc/sdhci-sprd.txt

+7 −0
Original line number Diff line number Diff line
@@ -19,6 +19,9 @@ Required properties: 
Optional properties:

- assigned-clocks: the same with "sdio" clock

- assigned-clock-parents: the default parent of "sdio" clock

- pinctrl-names: should be "default", "state_uhs"

- pinctrl-0: should contain default/high speed pin control

- pinctrl-1: should contain uhs mode pin control



PHY DLL delays are used to delay the data valid window, and align the window

to sampling clock. PHY DLL delays can be configured by following properties,
@@ -50,6 +53,10 @@ sdio0: sdio@20600000 { 
	assigned-clocks = <&ap_clk CLK_EMMC_2X>;

	assigned-clock-parents = <&rpll CLK_RPLL_390M>;



	pinctrl-names = "default", "state_uhs";

	pinctrl-0 = <&sd0_pins_default>;

	pinctrl-1 = <&sd0_pins_uhs>;



	sprd,phy-delay-sd-uhs-sdr104 = <0x3f 0x7f 0x2e 0x2e>;

	bus-width = <8>;

	non-removable;