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 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 compatible string definition has been limited to "arm,mali-midgard" to avoid checkpatch.pl warnings and to match what the driver actually expects (as of r16p0 out-of-tree). CC: John Reitan <john.reitan@xxxxxxx> Signed-off-by: Guillaume Tucker <guillaume.tucker@xxxxxxxxxxxxx> --- .../devicetree/bindings/gpu/arm,mali-midgard.txt | 53 ++++++++++++++++++++++ 1 file changed, 53 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..da8fc6d21bbf --- /dev/null +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -0,0 +1,53 @@ +# +# (C) COPYRIGHT 2013-2016 ARM Limited. +# Copyright (C) 2017 Collabora Ltd +# +# This program is free software and is provided to you under the terms of the +# GNU General Public License version 2 as published by the Free Software +# Foundation, and any use by you of this program is subject to the terms +# of such GNU licence. +# + + +ARM Mali Midgard GPU +==================== + +Required properties: + +- compatible : Should be "arm,mali-midgard". +- 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: + +- clocks : Phandle to clock for the Mali Midgard device. +- clock-names : Shall be "clk_mali". +- 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@0xfc010000 { + compatible = "arm,mali-midgard"; + reg = <0xfc010000 0x4000>; + interrupts = <0 36 4>, <0 37 4>, <0 38 4>; + interrupt-names = "JOB", "MMU", "GPU"; + + clocks = <&pclk_mali>; + clock-names = "clk_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
