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ARM: dts: rockchip: bump sd card pin drive strength up on rk3288-firefly

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This patch fix a corruption when reading card information during probe time.

Change-Id: I3fe1b32db12b7d71f7ae0c724b7c6d70382e3210
Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
This commit is contained in:
Nickey Yang
2016-08-09 15:40:02 +08:00
committed by Huang, Tao
parent 8eab2d8419
commit de0582b1bf
1 changed files with 28 additions and 0 deletions
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28
arch/arm/boot/dts/rk3288-firefly.dtsi
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@@ -444,6 +444,15 @@
output-low;
};
pcfg_pull_none_drv_8ma: pcfg-pull-none-drv-8ma {
drive-strength = <8>;
};
pcfg_pull_up_drv_8ma: pcfg-pull-up-drv-8ma {
bias-pull-up;
drive-strength = <8>;
};
act8846 {
pwr_hold: pwr-hold {
rockchip,pins = <0 1 RK_FUNC_GPIO &pcfg_output_high>;
@@ -499,6 +508,25 @@
};
sdmmc {
/*
* Default drive strength isn't enough to achieve even
* high-speed mode on firefly board so bump up to 8ma.
*/
sdmmc_bus4: sdmmc-bus4 {
rockchip,pins = <6 16 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
<6 17 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
<6 18 RK_FUNC_1 &pcfg_pull_up_drv_8ma>,
<6 19 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
};
sdmmc_clk: sdmmc-clk {
rockchip,pins = <6 20 RK_FUNC_1 &pcfg_pull_none_drv_8ma>;
};
sdmmc_cmd: sdmmc-cmd {
rockchip,pins = <6 21 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
};
sdmmc_pwr: sdmmc-pwr {
rockchip,pins = <7 11 RK_FUNC_GPIO &pcfg_pull_none>;
};