The ARM Mali Midgard GPU family is present in a number of SoCs from many different vendors such as Samsung Exynos and Rockchip. Import the device tree bindings documentation from the r16p0 release of the Mali Midgard GPU kernel driver: https://developer.arm.com/-/media/Files/downloads/mali-drivers/kernel/mali-midgard-gpu/TX011-SW-99002-r16p0-00rel0.tgz The "compatible" property strings have been redesigned to explicitly list all the Mali Midgard GPU types and include optional vendor ones. The "clock-names" property has been dropped as only one clock is used by the Mali Midgard driver which now needs to call clk_get with NULL. The "interrupt-names" property values have been converted to lower-case: "job", "mmu" and "gpu". The following optional bindings have been omitted in this initial version as they are only used in very specific cases: * snoop_enable_smc * snoop_disable_smc * jm_config * power_model * system-coherency * ipa-model The example has been simplified accordingly. The copyright and GPL licence header has been removed as deemed not necessary. CC: John Reitan <john.reitan@xxxxxxx> Tested-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> Signed-off-by: Guillaume Tucker <guillaume.tucker@xxxxxxxxxxxxx> --- .../devicetree/bindings/gpu/arm,mali-midgard.txt | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt new file mode 100644 index 000000000000..917c4f8d178f --- /dev/null +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -0,0 +1,57 @@ +ARM Mali Midgard GPU +==================== + +Required properties: + +- compatible : + * Must be one of the following: + + "arm,mali-t60x" + + "arm,mali-t62x" + + "arm,mali-t720" + + "arm,mali-t760" + + "arm,mali-t820" + + "arm,mali-t830" + + "arm,mali-t860" + + "arm,mali-t880" + * And, optionally, one of the vendor specific compatible: + + "amlogic,meson-gxm-mali" + +- reg : Physical base address of the device and length of the register area. + +- interrupts : Contains the three IRQ lines required by Mali Midgard devices. + +- interrupt-names : Contains the names of IRQ resources in the order they were + provided in the interrupts property. Must contain: "job", "mmu", "gpu". + + +Optional properties: + +- clocks : Phandle to clock for the Mali Midgard device. + +- mali-supply : Phandle to regulator for the Mali device. Refer to + Documentation/devicetree/bindings/regulator/regulator.txt for details. + +- operating-points : Refer to Documentation/devicetree/bindings/power/opp.txt + for details. + + +Example for a Mali-T602: + +gpu@fc010000 { + compatible = "arm,mali-t60x", "arm,mali-midgard"; + reg = <0xfc010000 0x4000>; + interrupts = <0 36 4>, <0 37 4>, <0 38 4>; + interrupt-names = "job", "mmu", "gpu"; + clocks = <&pclk_mali>; + mali-supply = <&vdd_mali>; + operating-points = < + /* KHz uV */ + 533000 1250000, + 450000 1150000, + 400000 1125000, + 350000 1075000, + 266000 1025000, + 160000 925000, + 100000 912500, + >; +}; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
