From mboxrd@z Thu Jan 1 00:00:00 1970 From: thierry.reding@gmail.com (Thierry Reding) Date: Tue, 29 Apr 2014 15:34:50 +0200 Subject: [PATCH] ARM: tegra: add SD wp-gpios to Venice2 DT In-Reply-To: <1398711219-23029-1-git-send-email-swarren@wwwdotorg.org> References: <1398711219-23029-1-git-send-email-swarren@wwwdotorg.org> Message-ID: <20140429133449.GA23699@ulmo> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Apr 28, 2014 at 12:53:39PM -0600, Stephen Warren wrote: > From: Stephen Warren > > Venice2 can detect write-protect on the SD card. Add the required > DT entries to allow this. > > Signed-off-by: Stephen Warren > --- > Thierry, could you test this for me; my Venice2 has been sent away for > a few days for some rework. You should find that if you write-protect > your SD card, the kernel fails/panics trying to mount it as a r/w root > fs, whereas if the card is not write-protected, everything still works > fine. Thanks. > --- > arch/arm/boot/dts/tegra124-venice2.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts > index 84a6ec039e1d..00e741ba6927 100644 > --- a/arch/arm/boot/dts/tegra124-venice2.dts > +++ b/arch/arm/boot/dts/tegra124-venice2.dts > @@ -943,6 +943,7 @@ > sdhci at 0,700b0400 { > cd-gpios = <&gpio TEGRA_GPIO(V, 2) GPIO_ACTIVE_HIGH>; > power-gpios = <&gpio TEGRA_GPIO(R, 0) GPIO_ACTIVE_HIGH>; > + wp-gpios = <&gpio TEGRA_GPIO(Q, 4) GPIO_ACTIVE_HIGH>; I need to make this GPIO_ACTIVE_LOW for this to work properly on my Venice2. With that I can see the initrd reporting: mount: /dev/mmcblk0p1 is write-protected, mounting read-only So with that changed: Tested-by: Thierry Reding -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 836 bytes Desc: not available URL: