From: Mason Yang <masonccyang@mxic.com.tw>
To: broonie@kernel.org, marek.vasut@gmail.com,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
bbrezillon@kernel.org, linux-renesas-soc@vger.kernel.org,
Geert Uytterhoeven <geert+renesas@glider.be>,
lee.jones@linaro.org, sergei.shtylyov@cogentembedded.com,
robh+dt@kernel.org, mark.rutland@arm.com,
devicetree@vger.kernel.org
Cc: juliensu@mxic.com.tw, Simon Horman <horms@verge.net.au>,
Mason Yang <masonccyang@mxic.com.tw>,
miquel.raynal@bootlin.com
Subject: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings
Date: Tue, 21 May 2019 15:19:34 +0800 [thread overview]
Message-ID: <1558423174-10748-4-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1558423174-10748-1-git-send-email-masonccyang@mxic.com.tw>
Document the bindings used by the Renesas R-Car Gen3 RPC-IF controller.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
---
.../devicetree/bindings/mfd/renesas-rpc-if.txt | 65 ++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt
diff --git a/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt
new file mode 100644
index 0000000..20ec85b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt
@@ -0,0 +1,65 @@
+Renesas R-Car Gen3 RPC-IF controller Device Tree Bindings
+---------------------------------------------------------
+
+RPC-IF supports both SPI NOR and HyperFlash (CFI-compliant flash)
+
+Required properties:
+- compatible: should be an SoC-specific compatible value, followed by
+ "renesas,rcar-gen3-rpc" as a fallback.
+ supported SoC-specific values are:
+ "renesas,r8a77995-rpc" (R-Car D3)
+- reg: should contain three register areas:
+ first for RPC-IF registers,
+ second for the direct mapping read mode and
+ third for the write buffer area.
+- reg-names: should contain "regs", "dirmap" and "wbuf"
+- clocks: should contain 1 entries for the module's clock
+- clock-names: should contain "rpc"
+- power-domains: should contain system-controller(sysc) for power-domain-cell
+- resets: should contain clock pulse generator(cpg) for reset-cell,
+ power-domain-cell and clock-cell
+- #address-cells: should be 1
+- #size-cells: should be 0
+
+Example:
+- SPI mode:
+
+ rpc: spi@ee200000 {
+ compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc";
+ reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>,
+ <0 0xee208000 0 0x100>;
+ reg-names = "regs", "dirmap", "wbuf";
+ clocks = <&cpg CPG_MOD 917>;
+ clock-names = "rpc";
+ power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
+ resets = <&cpg 917>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <40000000>;
+ spi-tx-bus-width = <1>;
+ spi-rx-bus-width = <1>;
+ };
+ };
+
+- HF mode:
+ rpc: spi@ee200000 {
+ compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc";
+ reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>,
+ <0 0xee208000 0 0x100>;
+ reg-names = "regs", "dirmap", "wbuf";
+ clocks = <&cpg CPG_MOD 917>;
+ clock-names = "rpc";
+ power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
+ resets = <&cpg 917>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ compatible = "cypress,hyperflash", "cfi-flash";
+ reg = <0>;
+ };
+ };
--
1.9.1
next prev parent reply other threads:[~2019-05-21 6:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 7:19 [PATCH v13 0/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD & SPI driver Mason Yang
2019-05-21 7:19 ` [PATCH v13 1/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD driver Mason Yang
2019-06-03 13:02 ` Lee Jones
2019-06-04 0:52 ` masonccyang
2019-05-21 7:19 ` [PATCH v13 2/3] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver Mason Yang
2019-05-21 7:19 ` Mason Yang [this message]
2019-05-22 16:50 ` [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings Sergei Shtylyov
2019-05-23 9:16 ` masonccyang
2019-06-03 13:04 ` Lee Jones
2019-06-03 14:55 ` Sergei Shtylyov
2019-06-06 7:40 ` masonccyang
2019-06-18 12:01 ` Marek Vasut
2019-06-19 7:36 ` masonccyang
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