| Message ID | 20190527124307.32075-2-narmstrong@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mmc: meson-gx: add dram-access-quirk support | expand |
On Mon, 27 May 2019 at 14:43, Neil Armstrong <narmstrong@baylibre.com> wrote: > > 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 <martin.blumenstingl@googlemail.com> > Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Applied for next, thanks! Kind regards Uffe > --- > Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > 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 { > -- > 2.21.0 >
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 {