1Broadcom IPROC SDHCI controller 2 3This file documents differences between the core properties described 4by mmc.txt and the properties that represent the IPROC SDHCI controller. 5 6Required properties: 7- compatible : Should be one of the following 8 "brcm,bcm2835-sdhci" 9 "brcm,bcm2711-emmc2" 10 "brcm,sdhci-iproc-cygnus" 11 "brcm,sdhci-iproc" 12 13Use brcm2835-sdhci for the eMMC controller on the BCM2835 (Raspberry Pi) and 14bcm2711-emmc2 for the additional eMMC2 controller on BCM2711. 15 16Use sdhci-iproc-cygnus for Broadcom SDHCI Controllers 17restricted to 32bit host accesses to SDHCI registers. 18 19Use sdhci-iproc for Broadcom SDHCI Controllers that allow standard 208, 16, 32-bit host access to SDHCI register. 21 22- clocks : The clock feeding the SDHCI controller. 23 24Optional properties: 25 - sdhci,auto-cmd12: specifies that controller should use auto CMD12. 26 27Example: 28 29sdhci0: sdhci@18041000 { 30 compatible = "brcm,sdhci-iproc-cygnus"; 31 reg = <0x18041000 0x100>; 32 interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; 33 clocks = <&lcpll0_clks BCM_CYGNUS_LCPLL0_SDIO_CLK>; 34 bus-width = <4>; 35 sdhci,auto-cmd12; 36 no-1-8-v; 37}; 38