[PATCH v2 0/2] arm64: dts: add mmc aliases for Exynos devices

[PATCH v2 0/2] arm64: dts: add mmc aliases for Exynos devices

[Henrik Grimler]

It is convenient to have fixed mmcblk numbering of the eMMC and sdcard
so that assigned numbers will not change from boot-to-boot or
depending on if storage devices are actually attached or not.

Also drop mshc aliases while we are at it and instead add mmc
capabilities to the individual device trees (right now they are added
depending on alias index).

---

Changes since v1:
* Set mmc-ddr-1_8v in device trees so that MMC_CAP_1_8V_DDR is set
  also after removal of mshc0 alias.  Issue was pointed out by
  Krzysztof and David.


Henrik Grimler (2):
  arm64: dts: exynos: drop mshc aliases
  arm64: dts: exynos: add mmc aliases

 arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi | 5 +++--
 arch/arm64/boot/dts/exynos/exynos7-espresso.dts       | 5 +++--
 arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts  | 1 +
 3 files changed, 7 insertions(+), 4 deletions(-)


base-commit: 35ade1eb465438cfd16fdc3a4905dd82f658fdce
-- 
2.30.2

[PATCH v2 1/2] arm64: dts: exynos: drop mshc aliases

[Henrik Grimler]

Previously, the mshc0 alias has been necessary so that
MMC_CAP_1_8V_DDR | MMC_CAP_8_BIT_DATA are set for mshc_0/mmc_0.
However, these capabilities should be described in the device tree so
that we do not have to rely on the alias.

The property mmc-ddr-1_8v replaces MMC_CAP_1_8V_DDR, while bus_width =
<8>, which is already set for all the mshc0/mmc0 nodes, replaces
MMC_CAP_8_BIT_DATA.

Also drop other mshc aliases as they are not needed.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
---

Changes since v1:
* Add mmc-ddr-1_8v property so that capabilities stays the same
  when mshc0 alias is removed

 arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi | 3 +--
 arch/arm64/boot/dts/exynos/exynos7-espresso.dts       | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
index f54f30633417..868f7b98a637 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
@@ -40,8 +40,6 @@ aliases {
 		spi2 = &spi_2;
 		spi3 = &spi_3;
 		spi4 = &spi_4;
-		mshc0 = &mshc_0;
-		mshc2 = &mshc_2;
 	};
 
 	chosen {
@@ -952,6 +950,7 @@ &i2s1 {
 
 &mshc_0 {
 	status = "okay";
+	mmc-ddr-1_8v;
 	mmc-hs200-1_8v;
 	mmc-hs400-1_8v;
 	cap-mmc-highspeed;
diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index f3f4a6ab4b49..35d949099166 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -18,8 +18,6 @@ / {
 
 	aliases {
 		serial0 = &serial_2;
-		mshc0 = &mmc_0;
-		mshc2 = &mmc_2;
 	};
 
 	chosen {
@@ -362,6 +360,7 @@ pmic_irq: pmic-irq-pins {
 &mmc_0 {
 	status = "okay";
 	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
 	mmc-hs200-1_8v;
 	non-removable;
 	card-detect-delay = <200>;
-- 
2.30.2

[PATCH v2 2/2] arm64: dts: exynos: add mmc aliases

[Henrik Grimler]

Add aliases for eMMC and SD card where applicable, so that
assigned mmc indeces are always the same.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
---

Changes since v1:
* None

 arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi | 2 ++
 arch/arm64/boot/dts/exynos/exynos7-espresso.dts       | 2 ++
 arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts  | 1 +
 3 files changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
index 868f7b98a637..e4ed788413fe 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
@@ -21,6 +21,8 @@ aliases {
 		gsc0 = &gsc_0;
 		gsc1 = &gsc_1;
 		gsc2 = &gsc_2;
+		mmc0 = &mshc_0;
+		mmc2 = &mshc_2;
 		pinctrl0 = &pinctrl_alive;
 		pinctrl1 = &pinctrl_aud;
 		pinctrl2 = &pinctrl_cpif;
diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index 35d949099166..1f2eddcebdd9 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -17,6 +17,8 @@ / {
 	compatible = "samsung,exynos7-espresso", "samsung,exynos7";
 
 	aliases {
+		mmc0 = &mmc_0;
+		mmc2 = &mmc_2;
 		serial0 = &serial_2;
 	};
 
diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
index 5db9a81ac7bb..47a389d9ff7d 100644
--- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
@@ -18,6 +18,7 @@ / {
 	chassis-type = "handset";
 
 	aliases {
+		mmc0 = &mmc_0;
 		serial0 = &serial_0;
 		serial1 = &serial_1;
 		serial2 = &serial_2;
-- 
2.30.2

Re: [PATCH v2 1/2] arm64: dts: exynos: drop mshc aliases

[Marek Szyprowski]

On 15.03.2023 22:28, Henrik Grimler wrote:
> Previously, the mshc0 alias has been necessary so that
> MMC_CAP_1_8V_DDR | MMC_CAP_8_BIT_DATA are set for mshc_0/mmc_0.
> However, these capabilities should be described in the device tree so
> that we do not have to rely on the alias.
>
> The property mmc-ddr-1_8v replaces MMC_CAP_1_8V_DDR, while bus_width =
> <8>, which is already set for all the mshc0/mmc0 nodes, replaces
> MMC_CAP_8_BIT_DATA.
>
> Also drop other mshc aliases as they are not needed.
>
> Signed-off-by: Henrik Grimler <henrik@grimler.se>

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>

 > ...


Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Re: [PATCH v2 2/2] arm64: dts: exynos: add mmc aliases

[Marek Szyprowski]

On 15.03.2023 22:28, Henrik Grimler wrote:
> Add aliases for eMMC and SD card where applicable, so that
> assigned mmc indeces are always the same.
>
> Signed-off-by: Henrik Grimler <henrik@grimler.se>

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>

 > ...

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Re: [PATCH v2 0/2] arm64: dts: add mmc aliases for Exynos devices

[Krzysztof Kozlowski]

On Wed, 15 Mar 2023 22:28:12 +0100, Henrik Grimler wrote:
> It is convenient to have fixed mmcblk numbering of the eMMC and sdcard
> so that assigned numbers will not change from boot-to-boot or
> depending on if storage devices are actually attached or not.
> 
> Also drop mshc aliases while we are at it and instead add mmc
> capabilities to the individual device trees (right now they are added
> depending on alias index).
> 
> [...]

Applied, thanks!

[1/2] arm64: dts: exynos: drop mshc aliases
      https://git.kernel.org/krzk/linux/c/c04d7b263d3ff036ca124494c57011c1c274dbe6
[2/2] arm64: dts: exynos: add mmc aliases
      https://git.kernel.org/krzk/linux/c/5f67124757464d632f0e5288e0ba48e3ff5531a9

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>