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| -rw-r--r-- | Documentation/devicetree/bindings/mmc/brcm,sdhci-iproc.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-iproc.txt b/Documentation/devicetree/bindings/mmc/brcm,sdhci-iproc.txt new file mode 100644 index 000000000..09d87cc11 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-iproc.txt @@ -0,0 +1,37 @@ +Broadcom IPROC SDHCI controller + +This file documents differences between the core properties described +by mmc.txt and the properties that represent the IPROC SDHCI controller. + +Required properties: +- compatible : Should be one of the following + "brcm,bcm2835-sdhci" + "brcm,bcm2711-emmc2" + "brcm,sdhci-iproc-cygnus" + "brcm,sdhci-iproc" + +Use brcm2835-sdhci for the eMMC controller on the BCM2835 (Raspberry Pi) and +bcm2711-emmc2 for the additional eMMC2 controller on BCM2711. + +Use sdhci-iproc-cygnus for Broadcom SDHCI Controllers +restricted to 32bit host accesses to SDHCI registers. + +Use sdhci-iproc for Broadcom SDHCI Controllers that allow standard +8, 16, 32-bit host access to SDHCI register. + +- clocks : The clock feeding the SDHCI controller. + +Optional properties: + - sdhci,auto-cmd12: specifies that controller should use auto CMD12. + +Example: + +sdhci0: sdhci@18041000 { + compatible = "brcm,sdhci-iproc-cygnus"; + reg = <0x18041000 0x100>; + interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&lcpll0_clks BCM_CYGNUS_LCPLL0_SDIO_CLK>; + bus-width = <4>; + sdhci,auto-cmd12; + no-1-8-v; +}; |