[mirror_ubuntu-jammy-kernel.git] / Documentation / devicetree / bindings / mmc / brcm,sdhci-iproc.txt

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,sdhci-iproc-cygnus"
	       "brcm,sdhci-iproc"

Use brcm2835-sdhci for Rasperry PI.

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;
};
Commit	Line	Data
61fe2f80 SB	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:
07255f28 SW	7	- compatible : Should be one of the following
	8	"brcm,bcm2835-sdhci"
	9	"brcm,sdhci-iproc-cygnus"
40fe0d43 SB	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.
07255f28	19
61fe2f80 SB	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
4c9847b7	27	sdhci0: sdhci@18041000 {
61fe2f80 SB	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	};