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Message-ID: <20250206121629.12186-3-crystal.guo@mediatek.com>
Date: Thu, 6 Feb 2025 20:16:09 +0800
From: Crystal Guo <crystal.guo@...iatek.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, Crystal Guo
<crystal.guo@...iatek.com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [v2,2/2] dt-bindings: memory-controllers: Add MediaTek DRAM controller interface
A MediaTek DRAM controller interface to provide the current DDR data rate.
Signed-off-by: Crystal Guo <crystal.guo@...iatek.com>
---
.../mediatek,common-dramc.yaml | 129 ------------------
.../memory-controllers/mediatek,dramc.yaml | 44 ++++++
2 files changed, 44 insertions(+), 129 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,common-dramc.yaml
create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml
diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,common-dramc.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,common-dramc.yaml
deleted file mode 100644
index c9e608c7f183..000000000000
--- a/Documentation/devicetree/bindings/memory-controllers/mediatek,common-dramc.yaml
+++ /dev/null
@@ -1,129 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
-# Copyright (c) 2024 MediaTek Inc.
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/memory-controllers/mediatek,common-dramc.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: MediaTek Common DRAMC (DRAM Controller)
-
-maintainers:
- - Crystal Guo <crystal.guo@...iatek.com>
-
-description: |
- The DRAM controller of MediaTek SoC provides an interface to
- get the current data rate of DRAM.
-
-properties:
- compatible:
- const: mediatek,common-dramc
-
- reg:
- minItems: 9
- items:
- - description: DRAMC_AO_CHA_BASE
- - description: DRAMC_AO_CHB_BASE
- - description: DRAMC_AO_CHC_BASE
- - description: DRAMC_AO_CHD_BASE
- - description: DRAMC_NAO_CHA_BASE
- - description: DRAMC_NAO_CHB_BASE
- - description: DRAMC_NAO_CHC_BASE
- - description: DRAMC_NAO_CHD_BASE
- - description: DDRPHY_AO_CHA_BASE
- - description: DDRPHY_AO_CHB_BASE
- - description: DDRPHY_AO_CHC_BASE
- - description: DDRPHY_AO_CHD_BASE
- - description: DDRPHY_NAO_CHA_BASE
- - description: DDRPHY_NAO_CHB_BASE
- - description: DDRPHY_NAO_CHC_BASE
- - description: DDRPHY_NAO_CHD_BASE
- - description: SLEEP_BASE
-
- support-ch-cnt:
- maxItems: 1
-
- fmeter-version:
- maxItems: 1
- description:
- Fmeter version for calculating dram data rate
-
- crystal-freq:
- maxItems: 1
- description:
- Reference clock rate in MHz
-
- shu-of:
- maxItems: 1
-
- pll-id: true
- shu-lv: true
- sdmpcw: true
- posdiv: true
- fbksel: true
- dqsopen: true
- async-ca: true
- dq-ser-mode: true
-
-required:
- - compatible
- - reg
- - support-ch-cnt
- - fmeter-version
- - crystal-freq
- - pll-id
- - shu-lv
- - shu-of
- - sdmpcw
- - posdiv
- - fbksel
- - dqsopen
- - async-ca
- - dq-ser-mode
-
-additionalProperties: false
-
-examples:
- - |
- soc {
- #address-cells = <2>;
- #size-cells = <2>;
-
- dramc: dramc@...30000 {
- compatible = "mediatek,common-dramc";
- reg = <0 0x10230000 0 0x2000>, /* DRAMC_AO_CHA_BASE */
- <0 0x10240000 0 0x2000>, /* DRAMC_AO_CHB_BASE */
- <0 0x10250000 0 0x2000>, /* DRAMC_AO_CHC_BASE */
- <0 0x10260000 0 0x2000>, /* DRAMC_AO_CHD_BASE */
- <0 0x10234000 0 0x1000>, /* DRAMC_NAO_CHA_BASE */
- <0 0x10244000 0 0x1000>, /* DRAMC_NAO_CHB_BASE */
- <0 0x10254000 0 0x1000>, /* DRAMC_NAO_CHC_BASE */
- <0 0x10264000 0 0x1000>, /* DRAMC_NAO_CHD_BASE */
- <0 0x10238000 0 0x2000>, /* DDRPHY_AO_CHA_BASE */
- <0 0x10248000 0 0x2000>, /* DDRPHY_AO_CHB_BASE */
- <0 0x10258000 0 0x2000>, /* DDRPHY_AO_CHC_BASE */
- <0 0x10268000 0 0x2000>, /* DDRPHY_AO_CHD_BASE */
- <0 0x10236000 0 0x2000>, /* DDRPHY_NAO_CHA_BASE */
- <0 0x10246000 0 0x2000>, /* DDRPHY_NAO_CHB_BASE */
- <0 0x10256000 0 0x2000>, /* DDRPHY_NAO_CHC_BASE */
- <0 0x10266000 0 0x2000>, /* DDRPHY_NAO_CHD_BASE */
- <0 0x10006000 0 0x1000>; /* SLEEP_BASE */
- support-ch-cnt = <4>;
- fmeter-version = <1>;
- crystal-freq = <26>;
- pll-id = <0x0e98 0x02000000 25>;
- shu-lv = <0x0e98 0x0000c000 14>;
- shu-of = <0x700>;
- sdmpcw = <0x0908 0x0007fff8 3>,
- <0x0928 0x0007fff8 3>;
- posdiv = <0x090c 0x00003800 11>,
- <0x092c 0x00003800 11>;
- fbksel = <0x0910 0x00000040 6>,
- <0x0910 0x00000040 6>;
- dqsopen = <0x0d94 0x04000000 26>,
- <0x0d94 0x04000000 26>;
- async-ca = <0x0d08 0x00000001 0>,
- <0x0d08 0x00000001 0>;
- dq-ser-mode = <0x0dc4 0x00000018 3>,
- <0x0dc4 0x00000018 3>;
- };
- };
diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml
new file mode 100644
index 000000000000..8bdacfc36cb5
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2025 MediaTek Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/mediatek,dramc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek DRAM Controller (DRAMC)
+
+maintainers:
+ - Crystal Guo <crystal.guo@...iatek.com>
+
+description:
+ A MediaTek DRAM controller interface to provide the current data rate of DRAM.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - mediatek,mt8196-dramc
+
+ reg:
+ items:
+ - description: anaphy registers
+ - description: ddrphy registers
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+
+examples:
+ - |
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ memory-controller@...36000 {
+ compatible = "mediatek,mt8196-dramc";
+ reg = <0 0x10236000 0 0x2000>,
+ <0 0x10238000 0 0x2000>;
+ };
+ };
--
2.18.0
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