1Device Tree Clock bindings for Altera's SoCFPGA platform 2 3This binding uses the common clock binding[1]. 4 5[1] Documentation/devicetree/bindings/clock/clock-bindings.txt 6 7Required properties: 8- compatible : shall be one of the following: 9 "altr,socfpga-pll-clock" - for a PLL clock 10 "altr,socfpga-perip-clock" - The peripheral clock divided from the 11 PLL clock. 12 "altr,socfpga-gate-clk" - Clocks that directly feed peripherals and 13 can get gated. 14 15- reg : shall be the control register offset from CLOCK_MANAGER's base for the clock. 16- clocks : shall be the input parent clock phandle for the clock. This is 17 either an oscillator or a pll output. 18- #clock-cells : from common clock binding, shall be set to 0. 19 20Optional properties: 21- fixed-divider : If clocks have a fixed divider value, use this property. 22- clk-gate : For "socfpga-gate-clk", clk-gate contains the gating register 23 and the bit index. 24- div-reg : For "socfpga-gate-clk" and "socfpga-periph-clock", div-reg contains 25 the divider register, bit shift, and width. 26- clk-phase : For the sdmmc_clk, contains the value of the clock phase that controls 27 the SDMMC CIU clock. The first value is the clk_sample(smpsel), and the second 28 value is the cclk_in_drv(drvsel). The clk-phase is used to enable the correct 29 hold/delay times that is needed for the SD/MMC CIU clock. The values of both 30 can be 0-315 degrees, in 45 degree increments. 31