Re: [PATCH 2/2] ARM: dts: igep0020: Add SD card write-protect pin.
From: Ladislav Michl <hidden>
Date: 2016-05-13 12:37:28
Also in:
linux-arm-kernel, linux-omap, lkml
Hi Enric! On Fri, May 06, 2016 at 11:02:34PM +0200, Enric Balletbo i Serra wrote:
A host device that supports write protection should refuse to write to an SD card that is designated read-only when write-protect is set. This is an optional feature of the SD specification.
Does it ever work on any IGEPv2? I have similar patch in my repo and there is no difference when enabling write protection on SD card. Also schemantics shows GPIO29 constantly pulled up with a resistor. Is there any board revision with working WP? I'm just curious as patch is of course correct. Best regards, ladis
quoted hunk ↗ jump to hunk
Signed-off-by: Enric Balletbo i Serra <enric.balletbo-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> --- arch/arm/boot/dts/omap3-igep0020-common.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+)diff --git a/arch/arm/boot/dts/omap3-igep0020-common.dtsi b/arch/arm/boot/dts/omap3-igep0020-common.dtsi index d6f839c..b697106 100644 --- a/arch/arm/boot/dts/omap3-igep0020-common.dtsi +++ b/arch/arm/boot/dts/omap3-igep0020-common.dtsi@@ -194,6 +194,12 @@ OMAP3630_CORE2_IOPAD(0x25f8, PIN_OUTPUT | MUX_MODE4) /* etk_d14.gpio_28 */ >; }; + + mmc1_wp_pins: pinmux_mmc1_cd_pins { + pinctrl-single,pins = < + OMAP3630_CORE2_IOPAD(0x25fa, PIN_INPUT | MUX_MODE4) /* etk_d15.gpio_29 */ + >; + }; }; &i2c3 {@@ -250,3 +256,8 @@ }; }; }; + +&mmc1 { + pinctrl-0 = <&mmc1_pins &mmc1_wp_pins>; + wp-gpios = <&gpio1 29 GPIO_ACTIVE_LOW>; /* gpio_29 */ +};
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