Re: [PATCH 2/2] dt-bindings: ata: add DT bindings for MediaTek SATA controller
From: Sergei Shtylyov <hidden>
Date: 2017-07-28 09:20:17
Also in:
linux-ide, linux-mediatek, lkml
Hello! On 7/27/2017 9:38 AM, Ryder Lee wrote:
quoted hunk ↗ jump to hunk
Add DT bindings for the onboard SATA controller present on the MediaTek SoCs. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> --- Documentation/devicetree/bindings/ata/ahci-mtk.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/ata/ahci-mtk.txtdiff --git a/Documentation/devicetree/bindings/ata/ahci-mtk.txt b/Documentation/devicetree/bindings/ata/ahci-mtk.txt new file mode 100644 index 0000000..a8d11db --- /dev/null +++ b/Documentation/devicetree/bindings/ata/ahci-mtk.txt@@ -0,0 +1,48 @@ +MediaTek Seria ATA controller + +Required properties: + - compatible : Must be "mediatek,ahci". + - reg : Physical base addresses and length of register sets. + - interrupts : Interrupt associated with the SATA device. + - interrupt-names : Associated name must be: "hostc". + - clocks : The phandle for the clock.
Your example shows that you need both phandle and specifier (afetr phandle).
+ - clock-names : Associated name must be: "ahb", "axi", "asic", "rbc", "pm" + - phys : The phandle for the PHY port.
Likewise.
+ - phy-names : Associated name must be: "sata-phy". + - ports-implemented : Mask that indicates which ports that the HBA supports + are available for software to use. Useful if PORTS_IMPL + is not programmed by the BIOS, which is true with some + embedded SOC's.
An empty line wouldn't hurt here...
+Optional properties:
+ - power-domains : A phandle and power domain specifier pair to the power
+ domain which is responsible for collapsing and restoring
+ power to the peripheral.
+ - resets : Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+ - reset-names : Associated names must be: "axi-rst", "sw-rst", "reg-rst".
+ - mediatek,phy-mode : A phandle to the system controller, used to enable
+ SATA function.
+
+Example:
+
+ sata: sata@1a200000 {
+ compatible = "mediatek,ahci";
+ reg = <0 0x1a200000 0 0x1100>;
+ interrupts = <GIC_SPI 233 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "hostc";
+ clocks = <&pciesys CLK_SATA_AHB_EN>,
+ <&pciesys CLK_SATA_AXI_EN>,
+ <&pciesys CLK_SATA_ASIC_EN>,
+ <&pciesys CLK_SATA_RBC_EN>,
+ <&pciesys CLK_SATA_PM_EN>;
+ clock-names = "ahb", "axi", "asic", "rbc", "pm";
+ phys = <&u3port1 PHY_TYPE_SATA>;
+ phy-names = "sata-phy";
+ ports-implemented = <0x1>;
+ power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
+ resets = <&pciesys MT7622_SATA_AXI_BUS_RST>,
+ <&pciesys MT7622_SATA_PHY_SW_RST>,
+ <&pciesys MT7622_SATA_PHY_REG_RST>;
+ reset-names = "axi-rst", "sw-rst", "reg-rst";
+ mediatek,phy-mode = <&pciesys>;
+ };MBR, Sergei