Commit 5a46b6fa authored by Neil Armstrong's avatar Neil Armstrong Committed by Ulf Hansson

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: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 754aee55
...@@ -22,6 +22,10 @@ Required properties: ...@@ -22,6 +22,10 @@ Required properties:
clock rate requested by the MMC core. clock rate requested by the MMC core.
- resets : phandle of the internal reset line - 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: Example:
sd_emmc_a: mmc@70000 { sd_emmc_a: mmc@70000 {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment