GNU Linux-libre 4.19.264-gnu1
[releases.git] / Documentation / devicetree / bindings / mmc / brcm,sdhci-iproc.txt
1 Broadcom IPROC SDHCI controller
2
3 This file documents differences between the core properties described
4 by mmc.txt and the properties that represent the IPROC SDHCI controller.
5
6 Required properties:
7 - compatible : Should be one of the following
8                "brcm,bcm2835-sdhci"
9                "brcm,sdhci-iproc-cygnus"
10                "brcm,sdhci-iproc"
11
12 Use brcm2835-sdhci for Rasperry PI.
13
14 Use sdhci-iproc-cygnus for Broadcom SDHCI Controllers
15 restricted to 32bit host accesses to SDHCI registers.
16
17 Use sdhci-iproc for Broadcom SDHCI Controllers that allow standard
18 8, 16, 32-bit host access to SDHCI register.
19
20 - clocks : The clock feeding the SDHCI controller.
21
22 Optional properties:
23   - sdhci,auto-cmd12: specifies that controller should use auto CMD12.
24
25 Example:
26
27 sdhci0: sdhci@18041000 {
28         compatible = "brcm,sdhci-iproc-cygnus";
29         reg = <0x18041000 0x100>;
30         interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
31         clocks = <&lcpll0_clks BCM_CYGNUS_LCPLL0_SDIO_CLK>;
32         bus-width = <4>;
33         sdhci,auto-cmd12;
34         no-1-8-v;
35 };