The RZ/G1C (a.k.a. R8A77470) comes with three SDHI interfaces,
SDHI0 and SDHI2 are compatible with R-Car Gen2 SDHIs, and
SDHI1 is compatible with R-Car Gen3 SDHIs, as it comes with an
internal DMAC, therefore SDHI1 is fully compatible with driver
renesas_sdhi_internal_dmac driver. As a result, the compatible
strings for the R8A77470 SDHI interfaces are a little bit special.
Document SDHI support for the RZ/G1C SoC.

Signed-off-by: Fabrizio Castro <[email protected]>
Reviewed-by: Biju Das <[email protected]>

---
v1->v2:
* Added "renesas,sdhi-mmc-r8a77470"
* Using generic/fallback compatibilty only for SDHI[02]
* Reworked changelog
---
 Documentation/devicetree/bindings/mmc/tmio_mmc.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt 
b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
index d39d5e4..247abee 100644
--- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
@@ -19,6 +19,8 @@ Required properties:
                "renesas,sdhi-r8a7744" - SDHI IP on R8A7744 SoC
                "renesas,sdhi-r8a7745" - SDHI IP on R8A7745 SoC
                "renesas,sdhi-r8a774a1" - SDHI IP on R8A774A1 SoC
+               "renesas,sdhi-r8a77470" - SDHI IP on R8A77470 SoC (SDHI[02])
+               "renesas,sdhi-mmc-r8a77470" - SDHI IP on R8A77470 SoC (SDHI1)
                "renesas,sdhi-r8a7778" - SDHI IP on R8A7778 SoC
                "renesas,sdhi-r8a7779" - SDHI IP on R8A7779 SoC
                "renesas,sdhi-r8a7790" - SDHI IP on R8A7790 SoC
@@ -35,8 +37,8 @@ Required properties:
                "renesas,sdhi-r8a77995" - SDHI IP on R8A77995 SoC
                "renesas,sdhi-shmobile" - a generic sh-mobile SDHI controller
                "renesas,rcar-gen1-sdhi" - a generic R-Car Gen1 SDHI controller
-               "renesas,rcar-gen2-sdhi" - a generic R-Car Gen2 or RZ/G1
-                                          SDHI controller
+               "renesas,rcar-gen2-sdhi" - a generic R-Car Gen2 and RZ/G1 (but
+                                          not RZ/G1C SDHI1) SDHI controller
                "renesas,rcar-gen3-sdhi" - a generic R-Car Gen3 or RZ/G2
                                           SDHI controller
 
-- 
2.7.4

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