linux-kernel - [PATCH 3/4] dt-bindings: mmc: add brcmstb share register and hwlocks reference

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Message-Id: <20250711154221.928164-5-kamal.dasu@broadcom.com>
Date: Fri, 11 Jul 2025 11:42:20 -0400
From: Kamal Dasu <kamal.dasu@...adcom.com>
To: andersson@...nel.org,
	baolin.wang@...ux.alibaba.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	florian.fainelli@...adcom.com,
	ulf.hansson@...aro.org,
	adrian.hunter@...el.com
Cc: bcm-kernel-feedback-list@...adcom.com,
	kamal.dasu@...adcom.com,
	linux-remoteproc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org,
	Kamal Dasu <kdasu@...adcom.com>
Subject: [PATCH 3/4] dt-bindings: mmc: add brcmstb share register and hwlocks reference

From: Kamal Dasu <kdasu@...adcom.com>

Adding optional controller share registers and hwspinlock reference fields
to be used by sdhci-brcmstb driver.

Signed-off-by: Kamal Dasu <kamal.dasu@...adcom.com>
---
 .../bindings/mmc/brcm,sdhci-brcmstb.yaml      | 29 +++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
index eee6be7a7867..fe9be7a7eca5 100644
--- a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
+++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
@@ -27,15 +27,20 @@ properties:
           - const: brcm,sdhci-brcmstb
 
   reg:
-    maxItems: 2
+    minItems: 2
+    maxItems: 4
 
   reg-names:
+    minItems: 2
     items:
       - const: host
       - const: cfg
+      - const: share       # Optional reg
+      - const: flshr_ipis0 # Optional reg
 
   interrupts:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   clocks:
     minItems: 1
@@ -60,6 +65,9 @@ properties:
     type: boolean
     description: Specifies that controller should use auto CMD12
 
+  hwlocks:
+    maxItems: 1
+
 allOf:
   - $ref: mmc-controller.yaml#
   - if:
@@ -115,3 +123,20 @@ examples:
       clocks = <&scmi_clk 245>;
       clock-names = "sw_sdio";
     };
+  - |
+    mmc@...1000 {
+      mmc-ddr-1_8v;
+      mmc-hs200-1_8v;
+      mmc-hs400-1_8v;
+      no-sd;
+      no-sdio;
+      non-removable;
+      bus-width = <0x8>;
+      compatible = "brcm,bcm74165b0-sdhci", "brcm,sdhci-brcmstb";
+      reg = <0x84b1000 0x260>, <0x84b1300 0x200>,  <0x84b1600 0x10>, <0x84a5404 0x4>;
+      reg-names = "host", "cfg", "share", "flshr_ipis0";
+      hwlocks = <&hw_lock 0x0>;
+      interrupts = <0x1 0x0 0x1f 0x4 0x1b 0x11>;
+      clocks = <&scmi_clk 245>;
+      clock-names = "sw_sdio";
+    };
-- 
2.34.1