Re: [PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate

[Kevin Hilman]

Jerome Brunet  writes:

> Different modules maybe installed by the user on the eMMC connector
> of the odroid-c2. While the red modules are working without an issue,
> it seems some black modules (apparently Samsung based) are having
> issue at 200MHz
>
> While the tuning algorithm introduced in v4.14 enables high speed modes
> on every other tested designs, it seems a problem remains for this
> particular combination of board and eMMC module.
>
> Lowering the maximum frequency of the eMMC on this board until we can
> figure out a better solution.
>
> Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
> Suggested-by: Ellie Reeves 
> Signed-off-by: Jerome Brunet 

Applied to v4.17/dt64 and Cc'd to stable,

Kevin

Re: [PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate

[Kevin Hilman]

Jerome Brunet  writes:

> Different modules maybe installed by the user on the eMMC connector
> of the odroid-c2. While the red modules are working without an issue,
> it seems some black modules (apparently Samsung based) are having
> issue at 200MHz
>
> While the tuning algorithm introduced in v4.14 enables high speed modes
> on every other tested designs, it seems a problem remains for this
> particular combination of board and eMMC module.
>
> Lowering the maximum frequency of the eMMC on this board until we can
> figure out a better solution.
>
> Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
> Suggested-by: Ellie Reeves 
> Signed-off-by: Jerome Brunet 

Applied to v4.17/dt64 and Cc'd to stable,

Kevin

[PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate

[Jerome Brunet]

Different modules maybe installed by the user on the eMMC connector
of the odroid-c2. While the red modules are working without an issue,
it seems some black modules (apparently Samsung based) are having
issue at 200MHz

While the tuning algorithm introduced in v4.14 enables high speed modes
on every other tested designs, it seems a problem remains for this
particular combination of board and eMMC module.

Lowering the maximum frequency of the eMMC on this board until we can
figure out a better solution.

Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
Suggested-by: Ellie Reeves 
Signed-off-by: Jerome Brunet 
---
 arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts 
b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 73a030a5ecf3..43475139576c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -311,7 +311,7 @@
pinctrl-names = "default", "clk-gate";
 
bus-width = <8>;
-   max-frequency = <2>;
+   max-frequency = <1>;
non-removable;
disable-wp;
cap-mmc-highspeed;
-- 
2.14.3

[PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate

[Jerome Brunet]

Different modules maybe installed by the user on the eMMC connector
of the odroid-c2. While the red modules are working without an issue,
it seems some black modules (apparently Samsung based) are having
issue at 200MHz

While the tuning algorithm introduced in v4.14 enables high speed modes
on every other tested designs, it seems a problem remains for this
particular combination of board and eMMC module.

Lowering the maximum frequency of the eMMC on this board until we can
figure out a better solution.

Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
Suggested-by: Ellie Reeves 
Signed-off-by: Jerome Brunet 
---
 arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts 
b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 73a030a5ecf3..43475139576c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -311,7 +311,7 @@
pinctrl-names = "default", "clk-gate";
 
bus-width = <8>;
-   max-frequency = <2>;
+   max-frequency = <1>;
non-removable;
disable-wp;
cap-mmc-highspeed;
-- 
2.14.3