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[v4,1/3] dt-bindings: exynos-dw-mshc-common: add exynos78xx variants

Message ID 1678640497.9030156-1-sleirsgoevy@gmail.com
State Superseded
Headers show
Series mmc: dw_mmc: fix DW MMC cores with 32-bit bus on 64-bit Linux systems | expand

Commit Message

Sergey Lisov March 12, 2023, 4:59 p.m. UTC 
Some Samsung Exynos boards using the arm64 architecture have DW MMC
controllers configured for a 32-bit data bus but a 64-bit FIFO. On these
systems the 64-bit FIFO registers must be accessed in two 32-bit halves.

Add two new compatible strings, "samsung,exynos78xx-dw-mshc" and
"samsung,exynos78xx-dw-mshc-smu" respectively, to denote exynos78xx
boards that need this quirk. But it's very possible that all
"samsung,exynos7-dw-mshc" boards are actually affected.
---
 .../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml         | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
index fdaa18481..a72a67792 100644
--- a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
@@ -22,6 +22,8 @@  properties:
       - samsung,exynos5420-dw-mshc-smu
       - samsung,exynos7-dw-mshc
       - samsung,exynos7-dw-mshc-smu
+      - samsung,exynos78xx-dw-mshc
+      - samsung,exynos78xx-dw-mshc-smu
       - axis,artpec8-dw-mshc
 
   reg: