| Message ID | 20171015124615.31391-2-wsa+renesas@sang-engineering.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sun, Oct 15, 2017 at 02:46:13PM +0200, Wolfram Sang wrote: > Some boards may have to use a certain driver type (or drive strength) to > achieve stable eMMC communication. Describe a binding to set this up via > DT. > > Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> > Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 15 October 2017 at 14:46, Wolfram Sang <wsa+renesas@sang-engineering.com> wrote: > Some boards may have to use a certain driver type (or drive strength) to > achieve stable eMMC communication. Describe a binding to set this up via > DT. > > Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> > Acked-by: Rob Herring <robh@kernel.org> Thanks, applied for next! Kind regards Uffe > --- > > no changes since v2 > > Documentation/devicetree/bindings/mmc/mmc.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt > index b32ade645ad97c..94a90b49a6925d 100644 > --- a/Documentation/devicetree/bindings/mmc/mmc.txt > +++ b/Documentation/devicetree/bindings/mmc/mmc.txt > @@ -53,6 +53,9 @@ Optional properties: > - no-sdio: controller is limited to send sdio cmd during initialization > - no-sd: controller is limited to send sd cmd during initialization > - no-mmc: controller is limited to send mmc cmd during initialization > +- fixed-emmc-driver-type: for non-removable eMMC, enforce this driver type. > + The value <n> is the driver type as specified in the eMMC specification > + (table 206 in spec version 5.1). > > *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line > polarity properties, we have to fix the meaning of the "normal" and "inverted" > -- > 2.11.0 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index b32ade645ad97c..94a90b49a6925d 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -53,6 +53,9 @@ Optional properties: - no-sdio: controller is limited to send sdio cmd during initialization - no-sd: controller is limited to send sd cmd during initialization - no-mmc: controller is limited to send mmc cmd during initialization +- fixed-emmc-driver-type: for non-removable eMMC, enforce this driver type. + The value <n> is the driver type as specified in the eMMC specification + (table 206 in spec version 5.1). *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line polarity properties, we have to fix the meaning of the "normal" and "inverted"