| From c04ffa71ff491220cac28f55237c9aad379a8656 Mon Sep 17 00:00:00 2001 |
| From: Jerome Brunet <jbrunet@baylibre.com> |
| Date: Fri, 2 Mar 2018 14:44:36 +0100 |
| Subject: ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate |
| |
| From: Jerome Brunet <jbrunet@baylibre.com> |
| |
| commit c04ffa71ff491220cac28f55237c9aad379a8656 upstream. |
| |
| 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 <ellierevves@gmail.com> |
| Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> |
| Cc: stable@vger.kernel.org |
| Signed-off-by: Kevin Hilman <khilman@baylibre.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts |
| +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts |
| @@ -276,7 +276,7 @@ |
| pinctrl-names = "default", "clk-gate"; |
| |
| bus-width = <8>; |
| - max-frequency = <200000000>; |
| + max-frequency = <100000000>; |
| non-removable; |
| disable-wp; |
| cap-mmc-highspeed; |
