linux-kernel - [PATCH 2/3] dt-bindings: ufs: mediatek,ufs: add MT8195 compatible and update clock nodes

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Message-ID: <20250718082719.653228-2-macpaul.lin@mediatek.com>
Date: Fri, 18 Jul 2025 16:27:17 +0800
From: Macpaul Lin <macpaul.lin@...iatek.com>
To: Alim Akhtar <alim.akhtar@...sung.com>, Avri Altman <avri.altman@....com>,
	Bart Van Assche <bvanassche@....org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Peter Wang
	<peter.wang@...iatek.com>, Stanley Jhu <chu.stanley@...il.com>, "James E . J
 . Bottomley" <James.Bottomley@...senPartnership.com>, "Martin K . Petersen"
	<martin.petersen@...cle.com>, <linux-scsi@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	<openembedded-core@...ts.openembedded.org>, <patches@...ts.linux.dev>,
	<stable@...r.kernel.org>
CC: Bear Wang <bear.wang@...iatek.com>, Pablo Sun <pablo.sun@...iatek.com>,
	Ramax Lo <ramax.lo@...iatek.com>, Macpaul Lin <macpaul.lin@...iatek.com>,
	Macpaul Lin <macpaul@...il.com>, MediaTek Chromebook Upstream
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH 2/3] dt-bindings: ufs: mediatek,ufs: add MT8195 compatible and update clock nodes

Add 'mediatek,mt8195-ufshci' to compatible list.
Update clocks and clock-names constraints to allow one to eight entries.
Introduce 'mediatek,ufs-disable-mcq' property to disable
MCQ (Multi-Circular Queue). Update conditional schema for mt8195
requiring eight 'clocks' and eight 'clock-names'.

Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
---
 .../devicetree/bindings/ufs/mediatek,ufs.yaml | 49 ++++++++++++++++---
 1 file changed, 43 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
index 32fd535a514a..9d6bcf735920 100644
--- a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
+++ b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
@@ -9,21 +9,20 @@ title: Mediatek Universal Flash Storage (UFS) Controller
 maintainers:
   - Stanley Chu <stanley.chu@...iatek.com>
 
-allOf:
-  - $ref: ufs-common.yaml
-
 properties:
   compatible:
     enum:
       - mediatek,mt8183-ufshci
       - mediatek,mt8192-ufshci
+      - mediatek,mt8195-ufshci
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 8
 
   clock-names:
-    items:
-      - const: ufs
+    minItems: 1
+    maxItems: 8
 
   phys:
     maxItems: 1
@@ -33,6 +32,11 @@ properties:
 
   vcc-supply: true
 
+  mediatek,ufs-disable-mcq:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: The mask to disable MCQ (Multi-Circular Queue) for UFS host.
+    type: boolean
+
 required:
   - compatible
   - clocks
@@ -43,6 +47,39 @@ required:
 
 unevaluatedProperties: false
 
+allOf:
+  - $ref: ufs-common.yaml
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - mediatek,mt8195-ufshci
+    then:
+      properties:
+        clocks:
+          minItems: 8
+          maxItems: 8
+        clock-names:
+          items:
+            - const: ufs
+            - const: ufs_aes
+            - const: ufs_tick
+            - const: unipro_sysclk
+            - const: unipro_tick
+            - const: unipro_mp_bclk
+            - const: ufs_tx_symbol
+            - const: ufs_mem_sub
+    else:
+      properties:
+        clocks:
+          minItems: 1
+          maxItems: 1
+        clock-names:
+          items:
+            - const: ufs
+
 examples:
   - |
     #include <dt-bindings/clock/mt8183-clk.h>
-- 
2.45.2