[PATCH] arm64: dts: freescale: sl28: correct MMC order

[PATCH] arm64: dts: freescale: sl28: correct MMC order

[Michael Walle]

Commit 342ab37ecaf8 ("arm64: dts: freescale: use fixed index mmcN for
layerscape") hardcoded the order of the MMC devices. This doesn't fit
the sl28 boards, which come with an onboard eMMC. Thus use the more
natural order for the eMMC and SD card. Use /dev/mmcblk0 for the eMMC
and /dev/mmcblk1 for the SD card which is removable by the user.

Please note, that the images for this board already use root=UUID=,
therefore the actual device number doesn't matter for booting.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
index fbaecf285d05..6da4a28c4d19 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
@@ -18,6 +18,8 @@
 
 	aliases {
 		crypto = &crypto;
+		mmc0 = &esdhc1;
+		mmc1 = &esdhc;
 		serial0 = &duart0;
 		serial1 = &duart1;
 		serial2 = &lpuart1;
-- 
2.20.1

RE: [PATCH] arm64: dts: freescale: sl28: correct MMC order

[Y.b. Lu]

> -----Original Message-----
> From: Michael Walle <michael@walle.cc>
> Sent: Wednesday, November 25, 2020 5:21 AM
> To: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org
> Cc: Shawn Guo <shawnguo@kernel.org>; Leo Li <leoyang.li@nxp.com>; Rob
> Herring <robh+dt@kernel.org>; Y.b. Lu <yangbo.lu@nxp.com>; Vladimir
> Oltean <vladimir.oltean@nxp.com>; Michael Walle <michael@walle.cc>
> Subject: [PATCH] arm64: dts: freescale: sl28: correct MMC order
> 
> Commit 342ab37ecaf8 ("arm64: dts: freescale: use fixed index mmcN for
> layerscape") hardcoded the order of the MMC devices. This doesn't fit
> the sl28 boards, which come with an onboard eMMC. Thus use the more
> natural order for the eMMC and SD card. Use /dev/mmcblk0 for the eMMC
> and /dev/mmcblk1 for the SD card which is removable by the user.
> 
> Please note, that the images for this board already use root=UUID=,
> therefore the actual device number doesn't matter for booting.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

It's ok for me to re-define mmc alias.
Reviewed-by: Yangbo Lu <yangbo.lu@nxp.com>

> ---
>  arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> index fbaecf285d05..6da4a28c4d19 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> @@ -18,6 +18,8 @@
> 
>  	aliases {
>  		crypto = &crypto;
> +		mmc0 = &esdhc1;
> +		mmc1 = &esdhc;
>  		serial0 = &duart0;
>  		serial1 = &duart1;
>  		serial2 = &lpuart1;
> --
> 2.20.1

Re: [PATCH] arm64: dts: freescale: sl28: correct MMC order

[Michael Walle]

Am 2020-11-24 22:21, schrieb Michael Walle:
> Commit 342ab37ecaf8 ("arm64: dts: freescale: use fixed index mmcN for
> layerscape") hardcoded the order of the MMC devices. This doesn't fit
> the sl28 boards, which come with an onboard eMMC. Thus use the more
> natural order for the eMMC and SD card. Use /dev/mmcblk0 for the eMMC
> and /dev/mmcblk1 for the SD card which is removable by the user.
> 
> Please note, that the images for this board already use root=UUID=,
> therefore the actual device number doesn't matter for booting.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git
> a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> index fbaecf285d05..6da4a28c4d19 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
> @@ -18,6 +18,8 @@
> 
>  	aliases {
>  		crypto = &crypto;
> +		mmc0 = &esdhc1;
> +		mmc1 = &esdhc;
>  		serial0 = &duart0;
>  		serial1 = &duart1;
>  		serial2 = &lpuart1;

This will be superfluous because Vladimirs patch was applied:
https://lore.kernel.org/linux-devicetree/20201130143923.GK4072@dragon/

Thanks!
-michael