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authorNĂ­colas F. R. A. Prado2022-07-08 15:26:05 -0400
committerGreg Kroah-Hartman2022-07-14 16:07:14 +0200
commitaae7948d564c614c26eb896eb8be57879146240c (patch)
tree37bea4e94fe07ba764ac62f24c57b855719ffb5c /Documentation
parent421c8d9a20da92deed2dac227e7ebdee7eb3e88f (diff)
Revert "dt-bindings: usb: mtk-xhci: Make all clocks required"
This reverts commit ebc4969ae125e65fdb563f66f4bfa7aec95f7eb4. That commit was supposed to make the binding better reflect the MediaTek XHCI hardware block by requiring all clocks to be present. But doing that also causes too much noise in the devicetrees, since it requires updating old MediaTek DTs to add clock handles for the fixed clocks, and going forward every new clock added to the binding would require even more updates. The commit also didn't update the example to match the changes, causing additional warnings. Instead let's keep the clocks optional so that old devicetrees can keep omitting the fixed clocks, and we'll just add the clocks as required on new DTs. Fixes: ebc4969ae125 ("dt-bindings: usb: mtk-xhci: Make all clocks required") Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: NĂ­colas F. R. A. Prado <nfraprado@collabora.com> Link: https://lore.kernel.org/r/20220708192605.43351-1-nfraprado@collabora.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
index 04cbbca0e94e..b0e58b15b9ae 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
@@ -68,6 +68,7 @@ properties:
maxItems: 1
clocks:
+ minItems: 1
items:
- description: Controller clock used by normal mode
- description: Reference clock used by low power mode etc
@@ -76,8 +77,9 @@ properties:
- description: controller clock
clock-names:
+ minItems: 1
items:
- - const: sys_ck
+ - const: sys_ck # required, the following ones are optional
- const: ref_ck
- const: mcu_ck
- const: dma_ck