[PATCH 1/3] dt-bindings: pinctrl: Add rk3576 dw-mshc bindings

[Detlev Casanova <detlev.casanova@collabora.com>]

Add the compatible string for rockchip,rk3576-dw-mshc and add support
for the rockchip,use-v2-tuning flag, a new feature of this core.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
---
 .../devicetree/bindings/mmc/rockchip-dw-mshc.yaml     | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
index 211cd0b0bc5f3..dd8d1e773bb38 100644
--- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
@@ -39,6 +39,7 @@ properties:
               - rockchip,rk3368-dw-mshc
               - rockchip,rk3399-dw-mshc
               - rockchip,rk3568-dw-mshc
+              - rockchip,rk3576-dw-mshc
               - rockchip,rk3588-dw-mshc
               - rockchip,rv1108-dw-mshc
               - rockchip,rv1126-dw-mshc
@@ -95,6 +96,16 @@ properties:
       If not specified, the host will do tuning for 360 times,
       namely tuning for each degree.
 
+  rockchip,use-v2-tuning:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      If present, use tuning version 2.
+      v2 tuning will inherit pre-stage loader's phase settings for the first
+      time, and do re-tune if necessary.
+      Re-tune will still try the rough degrees, for instance, 90, 180, 270,
+      360 but continue to do the fine tuning if sample window isn't good
+      enough.
+
 required:
   - compatible
   - reg
-- 
2.46.0