194 lines
6.7 KiB
Plaintext
194 lines
6.7 KiB
Plaintext
Samsung S5P/EXYNOS SoC series MIPI CSIS/DSIM DPHY
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-------------------------------------------------
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Required properties:
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- compatible : should be one of the listed compatibles:
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- "samsung,s5pv210-mipi-video-phy"
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- "samsung,exynos5420-mipi-video-phy"
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- "samsung,exynos5433-mipi-video-phy"
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- #phy-cells : from the generic phy bindings, must be 1;
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In case of s5pv210 and exynos5420 compatible PHYs:
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- syscon - phandle to the PMU system controller
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In case of exynos5433 compatible PHY:
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- samsung,pmu-syscon - phandle to the PMU system controller
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- samsung,disp-sysreg - phandle to the DISP system registers controller
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- samsung,cam0-sysreg - phandle to the CAM0 system registers controller
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- samsung,cam1-sysreg - phandle to the CAM1 system registers controller
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For "samsung,s5pv210-mipi-video-phy" compatible PHYs the second cell in
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the PHY specifier identifies the PHY and its meaning is as follows:
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0 - MIPI CSIS 0,
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1 - MIPI DSIM 0,
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2 - MIPI CSIS 1,
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3 - MIPI DSIM 1.
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"samsung,exynos5420-mipi-video-phy" and "samsung,exynos5433-mipi-video-phy"
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supports additional fifth PHY:
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4 - MIPI CSIS 2.
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Samsung EXYNOS SoC series Display Port PHY
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-------------------------------------------------
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Required properties:
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- compatible : should be one of the following supported values:
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- "samsung,exynos5250-dp-video-phy"
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- "samsung,exynos5420-dp-video-phy"
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- samsung,pmu-syscon: phandle for PMU system controller interface, used to
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control pmu registers for power isolation.
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- #phy-cells : from the generic PHY bindings, must be 0;
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Samsung S5P/EXYNOS SoC series USB PHY
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-------------------------------------------------
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Required properties:
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- compatible : should be one of the listed compatibles:
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- "samsung,exynos3250-usb2-phy"
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- "samsung,exynos4210-usb2-phy"
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- "samsung,exynos4x12-usb2-phy"
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- "samsung,exynos5250-usb2-phy"
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- "samsung,s5pv210-usb2-phy"
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- reg : a list of registers used by phy driver
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- first and obligatory is the location of phy modules registers
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- samsung,sysreg-phandle - handle to syscon used to control the system registers
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- samsung,pmureg-phandle - handle to syscon used to control PMU registers
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- #phy-cells : from the generic phy bindings, must be 1;
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- clocks and clock-names:
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- the "phy" clock is required by the phy module, used as a gate
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- the "ref" clock is used to get the rate of the clock provided to the
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PHY module
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Optional properties:
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- vbus-supply: power-supply phandle for vbus power source
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The first phandle argument in the PHY specifier identifies the PHY, its
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meaning is compatible dependent. For the currently supported SoCs (Exynos 4210
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and Exynos 4212) it is as follows:
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0 - USB device ("device"),
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1 - USB host ("host"),
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2 - HSIC0 ("hsic0"),
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3 - HSIC1 ("hsic1"),
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Exynos3250 has only USB device phy available as phy 0.
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Exynos 4210 and Exynos 4212 use mode switching and require that mode switch
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register is supplied.
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Example:
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For Exynos 4412 (compatible with Exynos 4212):
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usbphy: phy@125b0000 {
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compatible = "samsung,exynos4x12-usb2-phy";
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reg = <0x125b0000 0x100>;
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clocks = <&clock 305>, <&clock 2>;
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clock-names = "phy", "ref";
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status = "okay";
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#phy-cells = <1>;
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samsung,sysreg-phandle = <&sys_reg>;
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samsung,pmureg-phandle = <&pmu_reg>;
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};
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Then the PHY can be used in other nodes such as:
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phy-consumer@12340000 {
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phys = <&usbphy 2>;
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phy-names = "phy";
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};
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Refer to DT bindings documentation of particular PHY consumer devices for more
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information about required PHYs and the way of specification.
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Samsung SATA PHY Controller
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---------------------------
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SATA PHY nodes are defined to describe on-chip SATA Physical layer controllers.
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Each SATA PHY controller should have its own node.
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Required properties:
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- compatible : compatible list, contains "samsung,exynos5250-sata-phy"
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- reg : offset and length of the SATA PHY register set;
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- #phy-cells : must be zero
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- clocks : must be exactly one entry
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- clock-names : must be "sata_phyctrl"
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- samsung,exynos-sataphy-i2c-phandle : a phandle to the I2C device, no arguments
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- samsung,syscon-phandle : a phandle to the PMU system controller, no arguments
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Example:
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sata_phy: sata-phy@12170000 {
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compatible = "samsung,exynos5250-sata-phy";
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reg = <0x12170000 0x1ff>;
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clocks = <&clock 287>;
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clock-names = "sata_phyctrl";
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#phy-cells = <0>;
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samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
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samsung,syscon-phandle = <&pmu_syscon>;
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};
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Device-Tree bindings for sataphy i2c client driver
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--------------------------------------------------
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Required properties:
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compatible: Should be "samsung,exynos-sataphy-i2c"
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- reg: I2C address of the sataphy i2c device.
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Example:
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sata_phy_i2c:sata-phy@38 {
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compatible = "samsung,exynos-sataphy-i2c";
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reg = <0x38>;
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};
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Samsung Exynos5 SoC series USB DRD PHY controller
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--------------------------------------------------
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Required properties:
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- compatible : Should be set to one of the following supported values:
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- "samsung,exynos5250-usbdrd-phy" - for exynos5250 SoC,
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- "samsung,exynos5420-usbdrd-phy" - for exynos5420 SoC.
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- "samsung,exynos5433-usbdrd-phy" - for exynos5433 SoC.
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- "samsung,exynos7-usbdrd-phy" - for exynos7 SoC.
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- reg : Register offset and length of USB DRD PHY register set;
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- clocks: Clock IDs array as required by the controller
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- clock-names: names of clocks correseponding to IDs in the clock property;
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Required clocks:
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- phy: main PHY clock (same as USB DRD controller i.e. DWC3 IP clock),
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used for register access.
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- ref: PHY's reference clock (usually crystal clock), used for
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PHY operations, associated by phy name. It is used to
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determine bit values for clock settings register.
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For Exynos5420 this is given as 'sclk_usbphy30' in CMU.
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- optional clocks: Exynos5433 & Exynos7 SoC has now following additional
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gate clocks available:
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- phy_pipe: for PIPE3 phy
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- phy_utmi: for UTMI+ phy
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- itp: for ITP generation
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- samsung,pmu-syscon: phandle for PMU system controller interface, used to
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control pmu registers for power isolation.
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- #phy-cells : from the generic PHY bindings, must be 1;
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For "samsung,exynos5250-usbdrd-phy" and "samsung,exynos5420-usbdrd-phy"
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compatible PHYs, the second cell in the PHY specifier identifies the
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PHY id, which is interpreted as follows:
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0 - UTMI+ type phy,
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1 - PIPE3 type phy,
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Example:
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usbdrd_phy: usbphy@12100000 {
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compatible = "samsung,exynos5250-usbdrd-phy";
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reg = <0x12100000 0x100>;
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clocks = <&clock 286>, <&clock 1>;
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clock-names = "phy", "ref";
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samsung,pmu-syscon = <&pmu_system_controller>;
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#phy-cells = <1>;
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};
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- aliases: For SoCs like Exynos5420 having multiple USB 3.0 DRD PHY controllers,
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'usbdrd_phy' nodes should have numbered alias in the aliases node,
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in the form of usbdrdphyN, N = 0, 1... (depending on number of
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controllers).
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Example:
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aliases {
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usbdrdphy0 = &usb3_phy0;
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usbdrdphy1 = &usb3_phy1;
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};
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