Add DRM/KMS driver bindings documentation.
Describe the required properties for each of the hardware IPs drivers.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
---
.../devicetree/bindings/gpu/st,stih4xx.txt | 187 +++++++++++++++++++++
1 file changed, 187 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpu/st,stih4xx.txt
diff --git a/Documentation/devicetree/bindings/gpu/st,stih4xx.txt b/Documentation/devicetree/bindings/gpu/st,stih4xx.txt
new file mode 100644
index 0000000..4755760
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/st,stih4xx.txt
@@ -0,0 +1,187 @@
+STMicroelectronics stih4xx platforms
+
+- sti-display-subsystem: Master device for DRM sub-components
+ This device must be the parent of all the sub-components and is responsible
+ of bind them.
+ Required properties:
+ - compatible: "st,sti-display-subsystem"
+ - ranges
+
+- sti-compositor: frame compositor engine
+ Required properties:
+ - compatible: "st,stih<chip>-compositor"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - clocks: from common clock binding: handle hardware IP needed clocks, the
+ number of clocks may depend of the SoC type.
+ See ../clocks/clock-bindings.txt for details.
+ - clock-names: names of the clocks listed in clocks property in the same
+ order.
+ - resets: resets to be used by the device
+ See ../reset/reset.txt for details.
+ - reset-names: names of the resets listed in resets property in the same
+ order.
+
+- sti-vtac: video timing advanced inter dye communication Rx and TX
+ Required properties:
+ - compatible: "st,stih<chip>-vtac-rx" or "st,stih<chip>-vtac-tx"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - reg-names: names of the mapped memory regions listed in regs property in
+ the same order.
+ - clocks: from common clock binding: handle hardware IP needed clocks, the
+ number of clocks may depend of the SoC type.
+ See ../clocks/clock-bindings.txt for details.
+ - clock-names: names of the clocks listed in clocks property in the same
+ order.
+ - vtac-rx-aux: Must be set to indicated that the device is dedicated to
+ auxillary data path if not the device is used for main data path.
+ - vtac-tx-aux: Must be set to indicated that the device is dedicated to
+ auxillary data path if not the device is used for main data path.
+
+- sti-vtg: video timing generator
+ Required properties:
+ - compatible: "st,stih<chip>-vtg"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - reg-names: names of the mapped memory regions listed in regs property in
+ the same order.
+ - interrupts : VTG interrupt number to the CPU.
+ - interrupt-names: name of the interrupts listed in interrupts property in
+ the same order.
+ - vtg-aux: Must be set to indicated that the device is dedicated to
+ auxillary data path if not the device is used for main data path.
+
+- sti-tvout: video out hardware block
+ Required properties:
+ - compatible: "st,stih<chip>-tvout"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - reg-names: names of the mapped memory regions listed in regs property in
+ the same order.
+ - resets: resets to be used by the device
+ See ../reset/reset.txt for details.
+ - reset-names: names of the resets listed in resets property in the same
+ order.
+ - ranges: to allow probing of subdevices
+
+- sti-hdmi: hdmi output block
+ Required properties:
+ - compatible: "st,stih<chip>-hdmi";
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - reg-names: names of the mapped memory regions listed in regs property in
+ the same order.
+ - interrupts : HDMI interrupt number to the CPU.
+ - interrupt-names: name of the interrupts listed in interrupts property in
+ the same order
+ - clocks: from common clock binding: handle hardware IP needed clocks, the
+ number of clocks may depend of the SoC type.
+ - clock-names: names of the clocks listed in clocks property in the same
+ order.
+ - hdmi,hpd-gpio: gpio id to detect if an hdmi cable is plugged or not.
+
+sti-hda:
+ Required properties:
+ - compatible: "st,stih<chip>-hda"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - reg-names: names of the mapped memory regions listed in regs property in
+ the same order.
+ - clocks: from common clock binding: handle hardware IP needed clocks, the
+ number of clocks may depend of the SoC type.
+ See ../clocks/clock-bindings.txt for details.
+ - clock-names: names of the clocks listed in clocks property in the same
+ order.
+
+Example:
+
+/ {
+ ...
+ sti-display-subsystem {
+ compatible = "st,sti-display-subsystem";
+ ranges;
+
+ sti-compositor@fd340000 {
+ compatible = "st,stih416-compositor";
+ reg = <0xfd340000 0x1000>;
+ clock-names = "compo_main", "compo_aux",
+ "pix_main", "pix_aux";
+ clocks = <&CLK_M_A2_DIV1 CLK_M_COMPO_MAIN>, <&CLK_M_A2_DIV1 CLK_M_COMPO_AUX>,
+ <&CLOCKGEN_C_VCC CLK_S_PIX_MAIN>, <&CLOCKGEN_C_VCC CLK_S_PIX_AUX>;
+ reset-names = "compo-main", "compo-aux";
+ resets = <&softreset STIH416_COMPO_M_SOFTRESET>, <&softreset STIH416_COMPO_A_SOFTRESET>;
+ };
+
+ sti-vtac-rx-main@fee82800 {
+ compatible = "st,stih416-vtac-rx";
+ reg = <0xfee82800 0x200>;
+ clock-names = "vtac_main_phy";
+ clocks = <&CLK_M_A2_DIV0 CLK_M_VTAC_MAIN_PHY>;
+ };
+
+ sti-vtac-rx-aux@fee82a00 {
+ compatible = "st,stih416-vtac-rx";
+ reg = <0xfee82a00 0x200>;
+ clock-names = "vtac_aux_phy";
+ clocks = <&CLK_M_A2_DIV0 CLK_M_VTAC_AUX_PHY>;
+ vtac-rx-aux;
+ };
+
+ sti-vtac-tx-main@fd349000 {
+ compatible = "st,stih416-vtac-tx";
+ reg = <0xfd349000 0x200>, <0xfd320000 0x10000>;
+ reg-names = "vtac-tx", "vtac-phy";
+ clock-names = "vtac_tx_phy";
+ clocks = <&CLK_S_A1_HS CLK_S_VTAC_TX_PHY>;
+ };
+
+ sti-vtac-tx-aux@fd349200 {
+ compatible = "st,stih416-vtac-tx";
+ reg = <0xfd349200 0x200>, <0xfd320000 0x10000>;
+ reg-names = "vtac-tx", "vtac-phy";
+ clock-names = "vtac_tx_phy";
+ clocks = <&CLK_S_A1_HS CLK_S_VTAC_TX_PHY>;
+ vtac-tx-aux;
+ };
+
+ sti-vtg-main@fd348000 {
+ compatible = "st,stih416-vtg";
+ reg = <0xfd348000 0x400>, <0xfe85A800 0x300>;
+ reg-names = "master", "slave";
+ interrupts = <GIC_SPI 175 IRQ_TYPE_NONE>;
+ interrupt-names = "synchro_irq";
+ };
+
+ sti-vtg-aux@fd348400 {
+ compatible = "st,stih416-vtg";
+ reg = <0xfd348400 0x400>, <0xfe858200 0x300>;
+ reg-names = "master", "slave";
+ interrupts = <GIC_SPI 176 IRQ_TYPE_NONE>;
+ interrupt-names = "synchro_irq";
+ vtg-aux;
+ };
+
+ sti-tvout@fe000000 {
+ compatible = "st,stih416-tvout";
+ reg = <0xfe000000 0x1000>, <0xfe85a000 0x400>, <0xfe830000 0x10000>;
+ reg-names = "tvout-reg", "hda-reg", "syscfg";
+ reset-names = "tvout";
+ resets = <&softreset STIH416_HDTVOUT_SOFTRESET>;
+ };
+
+ sti-hdmi@fe85c000 {
+ compatible = "st,stih416-hdmi";
+ reg = <0xfe85c000 0x1000>, <0xfe830000 0x10000>;
+ reg-names = "hdmi-reg", "syscfg";
+ interrupts = <GIC_SPI 173 IRQ_TYPE_NONE>;
+ interrupt-names = "hdmi_irq";
+ clock-names = "hdmi_pix", "hdmi_tmds", "hdmi_phy", "hdmi_audio";
+ clocks = <&CLOCKGEN_C_VCC CLK_S_PIX_HDMI>, <&CLOCKGEN_C_VCC CLK_S_TMDS_HDMI>, <&CLOCKGEN_C_VCC CLK_S_HDMI_REJECT_PLL>, <&CLOCKGEN_B1 CLK_S_PCM_0>;
+ hdmi,hpd-gpio = <&PIO2 5>;
+ };
+
+ sti-hda@fe85a000 {
+ compatible = "st,stih416-hda";
+ reg = <0xfe85a000 0x400>, <0xfe83085c 0x4>;
+ reg-names = "hda-reg", "video-dacs-ctrl";
+ clock-names = "hda_pix", "hda_hddac";
+ clocks = <&CLOCKGEN_C_VCC CLK_S_PIX_HD>, <&CLOCKGEN_C_VCC CLK_S_HDDAC>;
+ };
+ };
+ ...
+};
--
1.9.1
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