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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/clock/altr_socfpga.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/clock/altr_socfpga.txt')
-rw-r--r-- | Documentation/devicetree/bindings/clock/altr_socfpga.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/altr_socfpga.txt b/Documentation/devicetree/bindings/clock/altr_socfpga.txt new file mode 100644 index 000000000..f72e80e0d --- /dev/null +++ b/Documentation/devicetree/bindings/clock/altr_socfpga.txt @@ -0,0 +1,30 @@ +Device Tree Clock bindings for Altera's SoCFPGA platform + +This binding uses the common clock binding[1]. + +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt + +Required properties: +- compatible : shall be one of the following: + "altr,socfpga-pll-clock" - for a PLL clock + "altr,socfpga-perip-clock" - The peripheral clock divided from the + PLL clock. + "altr,socfpga-gate-clk" - Clocks that directly feed peripherals and + can get gated. + +- reg : shall be the control register offset from CLOCK_MANAGER's base for the clock. +- clocks : shall be the input parent clock phandle for the clock. This is + either an oscillator or a pll output. +- #clock-cells : from common clock binding, shall be set to 0. + +Optional properties: +- fixed-divider : If clocks have a fixed divider value, use this property. +- clk-gate : For "socfpga-gate-clk", clk-gate contains the gating register + and the bit index. +- div-reg : For "socfpga-gate-clk" and "socfpga-periph-clock", div-reg contains + the divider register, bit shift, and width. +- clk-phase : For the sdmmc_clk, contains the value of the clock phase that controls + the SDMMC CIU clock. The first value is the clk_sample(smpsel), and the second + value is the cclk_in_drv(drvsel). The clk-phase is used to enable the correct + hold/delay times that is needed for the SD/MMC CIU clock. The values of both + can be 0-315 degrees, in 45 degree increments. |