diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2017-11-15 12:58:41 +0100 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2017-11-27 09:59:33 +0100 |
| commit | 166fb4842e780f63c31622af706335e7dcd48c24 (patch) | |
| tree | 64704ab492861e2fba6b87acafee5a6d06858e5e /arch/arm/boot/dts/imx7-colibri.dtsi | |
| parent | d7d9c0d508b44e535a447e989127e7aba3ad0ae8 (diff) | |
ARM: dts: colibri-imx7: limit eMMC SDHC frequency to 100MHz
During temperature testing modules print the following error every
now and then:
[ 12.231006] mmc0: Timeout waiting for hardware interrupt. retries left=0 opcode=12
Often the SDHC controller/driver does not recover from the issue
which leads to a Kernel panic (e.g. during boot the kernel can not
mount the root fs).
Lowering the frequency to 100MHz proves to be stable and affects
effective bandwith by less than 5%.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
Diffstat (limited to 'arch/arm/boot/dts/imx7-colibri.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx7-colibri.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi index 1d785ed612d3..45feeb1680a8 100644 --- a/arch/arm/boot/dts/imx7-colibri.dtsi +++ b/arch/arm/boot/dts/imx7-colibri.dtsi @@ -811,6 +811,7 @@ assigned-clocks = <&clks IMX7D_USDHC3_ROOT_CLK>; assigned-clock-rates = <400000000>; bus-width = <8>; + max-frequency = <100000000>; non-removable; }; |