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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-16 17:38:17 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-16 17:38:17 +0200 |
commit | e8a1d70117116c8d96c266f0b99e931717670eaf (patch) | |
tree | 384082054720dc01ad44f0342faeb80297f7fd8c /Documentation/devicetree/bindings/clock | |
parent | Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc (diff) | |
parent | Merge tag 'bitmain-soc-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
download | linux-e8a1d70117116c8d96c266f0b99e931717670eaf.tar.xz linux-e8a1d70117116c8d96c266f0b99e931717670eaf.zip |
Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM Device-tree updates from Olof Johansson:
"Besides new bindings and additional descriptions of hardware blocks
for various SoCs and boards, the main new contents here is:
SoCs:
- Intel Agilex (SoCFPGA)
- NXP i.MX8MM (Quad Cortex-A53 with media/graphics focus)
New boards:
- Allwinner:
+ RerVision H3-DVK (H3)
+ Oceanic 5205 5inMFD (H6)
+ Beelink GS2 (H6)
+ Orange Pi 3 (H6)
- Rockchip:
+ Orange Pi RK3399
+ Nanopi NEO4
+ Veyron-Mighty Chromebook variant
- Amlogic:
+ SEI Robotics SEI510
- ST Micro:
+ stm32mp157a discovery1
+ stm32mp157c discovery2
- NXP:
+ Eckelmann ci4x10 (i.MX6DL)
+ i.MX8MM EVK (i.MX8MM)
+ ZII i.MX7 RPU2 (i.MX7)
+ ZII SPB4 (VF610)
+ Zii Ultra (i.MX8M)
+ TQ TQMa7S (i.MX7Solo)
+ TQ TQMa7D (i.MX7Dual)
+ Kobo Aura (i.MX50)
+ Menlosystems M53 (i.MX53)j
- Nvidia:
+ Jetson Nano (Tegra T210)"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (593 commits)
arm64: dts: bitmain: Add UART pinctrl support for Sophon Edge
arm64: dts: bitmain: Add pinctrl support for BM1880 SoC
arm64: dts: bitmain: Add GPIO Line names for Sophon Edge board
arm64: dts: bitmain: Add GPIO support for BM1880 SoC
ARM: dts: gemini: Indent DIR-685 partition table
dt-bindings: hwmon (pwm-fan) Remove dead "cooling-*-state" properties
ARM: dts: qcom-apq8064: Set 'cxo_board' as ref clock of the DSI PHY
arm64: dts: msm8998: thermal: Restrict thermal zone name length to under 20
arm64: dts: msm8998: thermal: Fix number of supported sensors
arm64: dts: msm8998-mtp: thermal: Remove skin and battery thermal zones
arm64: dts: exynos: Move fixed-clocks out of soc
arm64: dts: exynos: Move pmu and timer nodes out of soc
ARM: dts: s5pv210: Fix camera clock provider on Goni board
ARM: dts: exynos: Properly override node to use MDMA0 on Universal C210
ARM: dts: exynos: Move fixed-clocks out of soc on Exynos3250
ARM: dts: exynos: Remove unneeded address/size cells from fixed-clock on Exynos3250
ARM: dts: exynos: Move pmu and timer nodes out of soc
arm64: dts: rockchip: fix IO domain voltage setting of APIO5 on rockpro64
arm64: dts: db820c: Add sound card support
arm64: dts: apq8096-db820c: Add HDMI display support
...
Diffstat (limited to 'Documentation/devicetree/bindings/clock')
-rw-r--r-- | Documentation/devicetree/bindings/clock/xlnx,zynqmp-clk.txt | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/xlnx,zynqmp-clk.txt b/Documentation/devicetree/bindings/clock/xlnx,zynqmp-clk.txt new file mode 100644 index 000000000000..391ee1a60bed --- /dev/null +++ b/Documentation/devicetree/bindings/clock/xlnx,zynqmp-clk.txt @@ -0,0 +1,63 @@ +-------------------------------------------------------------------------- +Device Tree Clock bindings for the Zynq Ultrascale+ MPSoC controlled using +Zynq MPSoC firmware interface +-------------------------------------------------------------------------- +The clock controller is a h/w block of Zynq Ultrascale+ MPSoC clock +tree. It reads required input clock frequencies from the devicetree and acts +as clock provider for all clock consumers of PS clocks. + +See clock_bindings.txt for more information on the generic clock bindings. + +Required properties: + - #clock-cells: Must be 1 + - compatible: Must contain: "xlnx,zynqmp-clk" + - clocks: List of clock specifiers which are external input + clocks to the given clock controller. Please refer + the next section to find the input clocks for a + given controller. + - clock-names: List of clock names which are exteral input clocks + to the given clock controller. Please refer to the + clock bindings for more details. + +Input clocks for zynqmp Ultrascale+ clock controller: + +The Zynq UltraScale+ MPSoC has one primary and four alternative reference clock +inputs. These required clock inputs are: + - pss_ref_clk (PS reference clock) + - video_clk (reference clock for video system ) + - pss_alt_ref_clk (alternative PS reference clock) + - aux_ref_clk + - gt_crx_ref_clk (transceiver reference clock) + +The following strings are optional parameters to the 'clock-names' property in +order to provide an optional (E)MIO clock source: + - swdt0_ext_clk + - swdt1_ext_clk + - gem0_emio_clk + - gem1_emio_clk + - gem2_emio_clk + - gem3_emio_clk + - mio_clk_XX # with XX = 00..77 + - mio_clk_50_or_51 #for the mux clock to gem tsu from 50 or 51 + + +Output clocks are registered based on clock information received +from firmware. Output clocks indexes are mentioned in +include/dt-bindings/clock/xlnx-zynqmp-clk.h. + +------- +Example +------- + +firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + zynqmp_clk: clock-controller { + #clock-cells = <1>; + compatible = "xlnx,zynqmp-clk"; + clocks = <&pss_ref_clk>, <&video_clk>, <&pss_alt_ref_clk>, <&aux_ref_clk>, <>_crx_ref_clk>; + clock-names = "pss_ref_clk", "video_clk", "pss_alt_ref_clk","aux_ref_clk", "gt_crx_ref_clk"; + }; + }; +}; |