linux-kernel - [PATCH RFC v1 2/4] dt-bindings: power: meson-ee-pwrc: add support for the Meson GX SoCs

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Message-Id: <20200414201457.229131-3-martin.blumenstingl@googlemail.com>
Date:   Tue, 14 Apr 2020 22:14:55 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     robh+dt@...nel.org, khilman@...libre.com, narmstrong@...libre.com,
        linux-amlogic@...ts.infradead.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH RFC v1 2/4] dt-bindings: power: meson-ee-pwrc: add support for the Meson GX SoCs

The power domains on the GX SoCs are very similar to G12A. The only
known differences so far are:
- The GX SoCs do not have the HHI_VPU_MEM_PD_REG2 register (for the
  VPU power-domain)
- The GX SoCs have an additional reset line called "dvin"

Add a new compatible string and adjust the reset line expectations for
these SoCs.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 .../bindings/power/amlogic,meson-ee-pwrc.yaml | 27 +++++++++++++++++++
 include/dt-bindings/power/meson-gxbb-power.h  | 13 +++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 include/dt-bindings/power/meson-gxbb-power.h

diff --git a/Documentation/devicetree/bindings/power/amlogic,meson-ee-pwrc.yaml b/Documentation/devicetree/bindings/power/amlogic,meson-ee-pwrc.yaml
index a0e4cf143b9c..15a29ed19327 100644
--- a/Documentation/devicetree/bindings/power/amlogic,meson-ee-pwrc.yaml
+++ b/Documentation/devicetree/bindings/power/amlogic,meson-ee-pwrc.yaml
@@ -26,6 +26,7 @@ properties:
       - amlogic,meson8-pwrc
       - amlogic,meson8b-pwrc
       - amlogic,meson8m2-pwrc
+      - amlogic,meson-gxbb-pwrc
       - amlogic,meson-g12a-pwrc
       - amlogic,meson-sm1-pwrc
 
@@ -42,6 +43,7 @@ properties:
 
   resets:
     minItems: 11
+    maxItems: 12
 
   "#power-domain-cells":
     const: 1
@@ -77,6 +79,31 @@ allOf:
         - resets
         - reset-names
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-gxbb-pwrc
+    then:
+      properties:
+        reset-names:
+          items:
+            - const: viu
+            - const: venc
+            - const: vcbus
+            - const: bt656
+            - const: dvin
+            - const: rdma
+            - const: venci
+            - const: vencp
+            - const: vdac
+            - const: vdi6
+            - const: vencl
+            - const: vid_lock
+      required:
+        - resets
+        - reset-names
+
   - if:
       properties:
         compatible:
diff --git a/include/dt-bindings/power/meson-gxbb-power.h b/include/dt-bindings/power/meson-gxbb-power.h
new file mode 100644
index 000000000000..57ab38dcb6bb
--- /dev/null
+++ b/include/dt-bindings/power/meson-gxbb-power.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */
+/*
+ * Copyright (c) 2019 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@...libre.com>
+ */
+
+#ifndef _DT_BINDINGS_MESON_GXBB_POWER_H
+#define _DT_BINDINGS_MESON_GXBB_POWER_H
+
+#define PWRC_GXBB_VPU_ID		0
+#define PWRC_GXBB_ETH_ID		1
+
+#endif
-- 
2.26.0