Add documentation for 'xlnx,zynqmp-8.9a' SDHCI controller and optional
properties followed by example.
Signed-off-by: Manish Narani <manish.narani@xxxxxxxxxx>
---
.../devicetree/bindings/mmc/arasan,sdhci.txt | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
index 1edbb04..6945b3b 100644
--- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
@@ -15,6 +15,9 @@ Required Properties:
- "arasan,sdhci-5.1": generic Arasan SDHCI 5.1 PHY
- "rockchip,rk3399-sdhci-5.1", "arasan,sdhci-5.1": rk3399 eMMC PHY
For this device it is strongly suggested to include arasan,soc-ctl-syscon.
+ - "xlnx,zynqmp-8.9a": ZynqMP SDHCI 8.9a PHY
+ For this device it is strongly suggested to include clock-output-names and
+ #clock-cells.
- "ti,am654-sdhci-5.1", "arasan,sdhci-5.1": TI AM654 MMC PHY
Note: This binding has been deprecated and moved to [5].
@@ -45,6 +48,24 @@ Optional Properties:
- xlnx,int-clock-stable-broken: when present, the controller always reports
that the internal clock is stable even when it is not.
+Optional Properties for "xlnx,zynqmp-8.9a":
+ - xlnx,tap-delay-mmc-hsd: Input/Output Tap Delays in degrees for MMC HS.
+ - xlnx,tap-delay-sd-hsd: Input/Output Tap Delays in degrees for SD HS.
+ - xlnx,tap-delay-sdr25: Input/Output Tap Delays in degrees for SDR25.
+ - xlnx,tap-delay-sdr50: Input/Output Tap Delays in degrees for SDR50.
+ - xlnx,tap-delay-sdr104: Input/Output Tap Delays in degrees for SDR104.
+ - xlnx,tap-delay-sd-ddr50: Input/Output Tap Delays in degrees for SD DDR50.
+ - xlnx,tap-delay-mmc-ddr52: Input/Output Tap Delays in degrees for MMC DDR52.
+ - xlnx,tap-delay-mmc-hs200: Input/Output Tap Delays in degrees for MMC HS200.
+
+ Above mentioned are the clock (phase) delays which are to be configured in the
+ controller while switching to particular speed mode. If not specified, driver
+ will configure the default value defined for particular mode in it.
+
+ - xlnx,mio-bank: When specified, this will indicate the MIO bank number in
+ which the command and data lines are configured. If not specified, driver
+ will assume this as 0.
+
Example:
sdhci@e0100000 {
compatible = "arasan,sdhci-8.9a";
@@ -80,3 +101,14 @@ Example:
phy-names = "phy_arasan";
#clock-cells = <0>;
};
+
+ sdhci: mmc@ff160000 {
+ compatible = "xlnx,zynqmp-8.9a", "arasan,sdhci-8.9a";
+ interrupt-parent = <&gic>;
+ interrupts = <0 48 4>;
+ reg = <0x0 0xff160000 0x0 0x1000>;
+ clock-names = "clk_xin", "clk_ahb";
+ clock-output-names = "clk_sd0";
+ #clock-cells = <0>;
+ xlnx,tap-delay-sd-hsd = <21>, <6>;
+ };
--
2.1.1
