In the case of a single clock source, you don't need names. However, if the controller has 2 clock sources, you need to name them correctly so the driver can find the 2nd one.
Signed-off-by: Chris Brandt <[email protected]> --- Documentation/devicetree/bindings/mmc/tmio_mmc.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt index a1650ed..258b98c 100644 --- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt +++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt @@ -25,8 +25,29 @@ Required properties: "renesas,sdhi-r8a7795" - SDHI IP on R8A7795 SoC "renesas,sdhi-r8a7796" - SDHI IP on R8A7796 SoC +- clocks: Most controllers only have 1 clock source per cahnnel. However, some + have 2. If 2 clocks are specified, you must name them as "core" and + "carddetect". If the controller only has 1 clock, naming is not + required. + Optional properties: - toshiba,mmc-wrprotect-disable: write-protect detection is unavailable - pinctrl-names: should be "default", "state_uhs" - pinctrl-0: should contain default/high speed pin ctrl - pinctrl-1: should contain uhs mode pin ctrl + +Example showing 2 clocks: + sdhi0: sd@e804e000 { + compatible = "renesas,sdhi-r7s72100"; + reg = <0xe804e000 0x100>; + interrupts = <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH + GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH + GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>; + + clocks = <&mstp12_clks R7S72100_CLK_SDHI00>, + <&mstp12_clks R7S72100_CLK_SDHI01>; + clock-names = "core", "carddetect"; + cap-sd-highspeed; + cap-sdio-irq; + status = "disabled"; + }; -- 2.10.1
