diff options
| author | Neil Armstrong <[email protected]> | 2019-05-27 14:43:05 +0200 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2019-06-10 17:11:09 +0200 |
| commit | 5a46b6fa0f33c2ca7a8432a0a48e1bf4a71fcc9f (patch) | |
| tree | 3e71f4231fd458200515d4f29bbd734da0b545ce | |
| parent | 754aee559160fe6a9d7debe9f1ad07d060e6ae93 (diff) | |
dt-bindings: mmc: meson-gx: add dram-access-quirk property
On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which
makes any DRAM access from the MMC controller fail.
Add the amlogic,dram-access-quirk property so signal this particular
controller has this bug and needs a quirk to work properly.
Reviewed-by: Martin Blumenstingl <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt index 13e70409e8ac..ccc5358db131 100644 --- a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt +++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt @@ -22,6 +22,10 @@ Required properties: clock rate requested by the MMC core. - resets : phandle of the internal reset line +Optional properties: +- amlogic,dram-access-quirk: set when controller's internal DMA engine cannot access the + DRAM memory, like on the G12A dedicated SDIO controller. + Example: sd_emmc_a: mmc@70000 { |