[prev in list] [next in list] [prev in thread] [next in thread] 

List:       git-commits-head
Subject:    spi: Mediatek: Document devicetree bindings for spi bus
From:       "Linux Kernel Mailing List" <linux-kernel () vger ! kernel ! org>
Date:       2015-08-31 23:02:10
Message-ID: 20150831230210.76772661220 () gitolite ! kernel ! org
[Download RAW message or body]

Web:        https://git.kernel.org/torvalds/c/0d850e7cdc69962e85abd7f7dcd2359f293f835a
                
Commit:     0d850e7cdc69962e85abd7f7dcd2359f293f835a
Parent:     bc0195aad0daa2ad5b0d76cce22b167bc3435590
Refname:    refs/heads/master
Author:     Leilk Liu <leilk.liu@mediatek.com>
AuthorDate: Fri Aug 7 15:19:49 2015 +0800
Committer:  Mark Brown <broonie@kernel.org>
CommitDate: Fri Aug 7 14:35:12 2015 +0100

    spi: Mediatek: Document devicetree bindings for spi bus
    
    Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
    Signed-off-by: Mark Brown <broonie@kernel.org>
---
 .../devicetree/bindings/spi/spi-mt65xx.txt         | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/spi-mt65xx.txt \
b/Documentation/devicetree/bindings/spi/spi-mt65xx.txt new file mode 100644
index 0000000..dcefc43
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-mt65xx.txt
@@ -0,0 +1,51 @@
+Binding for MTK SPI controller
+
+Required properties:
+- compatible: should be one of the following.
+    - mediatek,mt8173-spi: for mt8173 platforms
+    - mediatek,mt8135-spi: for mt8135 platforms
+    - mediatek,mt6589-spi: for mt6589 platforms
+
+- #address-cells: should be 1.
+
+- #size-cells: should be 0.
+
+- reg: Address and length of the register set for the device
+
+- interrupts: Should contain spi interrupt
+
+- clocks: phandles to input clocks.
+  The first should be <&topckgen CLK_TOP_SPI_SEL>.
+  The second should be one of the following.
+   -  <&clk26m>: specify parent clock 26MHZ.
+   -  <&topckgen CLK_TOP_SYSPLL3_D2>: specify parent clock 109MHZ.
+				      It's the default one.
+   -  <&topckgen CLK_TOP_SYSPLL4_D2>: specify parent clock 78MHZ.
+   -  <&topckgen CLK_TOP_UNIVPLL2_D4>: specify parent clock 104MHZ.
+   -  <&topckgen CLK_TOP_UNIVPLL1_D8>: specify parent clock 78MHZ.
+
+- clock-names: shall be "spi-clk" for the controller clock, and
+  "parent-clk" for the parent clock.
+
+Optional properties:
+- mediatek,pad-select: specify which pins group(ck/mi/mo/cs) spi
+  controller used, this value should be 0~3, only required for MT8173.
+    0: specify GPIO69,70,71,72 for spi pins.
+    1: specify GPIO102,103,104,105 for spi pins.
+    2: specify GPIO128,129,130,131 for spi pins.
+    3: specify GPIO5,6,7,8 for spi pins.
+
+Example:
+
+- SoC Specific Portion:
+spi: spi@1100a000 {
+	compatible = "mediatek,mt8173-spi";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	reg = <0 0x1100a000 0 0x1000>;
+	interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>;
+	clocks = <&topckgen CLK_TOP_SPI_SEL>, <&topckgen CLK_TOP_SYSPLL3_D2>;
+	clock-names = "spi-clk", "parent-clk";
+	mediatek,pad-select = <0>;
+	status = "disabled";
+};
--
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[prev in list] [next in list] [prev in thread] [next in thread]