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author | Emmanuel Vadot <manu@FreeBSD.org> | 2019-01-11 05:27:30 +0000 |
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committer | Emmanuel Vadot <manu@FreeBSD.org> | 2019-01-11 05:27:30 +0000 |
commit | a31d1ff13cd8d70944a6446c0e2478d7f25b53e7 (patch) | |
tree | 95e0f475d5a1ebb20845d0809fdc2d15875b2ea9 /Bindings/mmc/sdhci-sprd.txt | |
parent | 0bf7de3125ed8dcfbeaa112994b25101fa9b96c6 (diff) | |
download | src-a31d1ff13cd8d70944a6446c0e2478d7f25b53e7.tar.gz src-a31d1ff13cd8d70944a6446c0e2478d7f25b53e7.zip |
Import DTS files from Linux 4.20vendor/device-tree/4.20
Notes
Notes:
svn path=/vendor/device-tree/dist/; revision=342930
svn path=/vendor/device-tree/4.20/; revision=342931; tag=vendor/device-tree/4.20
Diffstat (limited to 'Bindings/mmc/sdhci-sprd.txt')
-rw-r--r-- | Bindings/mmc/sdhci-sprd.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Bindings/mmc/sdhci-sprd.txt b/Bindings/mmc/sdhci-sprd.txt new file mode 100644 index 000000000000..45c9978aad7b --- /dev/null +++ b/Bindings/mmc/sdhci-sprd.txt @@ -0,0 +1,41 @@ +* Spreadtrum SDHCI controller (sdhci-sprd) + +The Secure Digital (SD) Host controller on Spreadtrum SoCs provides an interface +for MMC, SD and SDIO types of cards. + +This file documents differences between the core properties in mmc.txt +and the properties used by the sdhci-sprd driver. + +Required properties: +- compatible: Should contain "sprd,sdhci-r11". +- reg: physical base address of the controller and length. +- interrupts: Interrupts used by the SDHCI controller. +- clocks: Should contain phandle for the clock feeding the SDHCI controller +- clock-names: Should contain the following: + "sdio" - SDIO source clock (required) + "enable" - gate clock which used for enabling/disabling the device (required) + +Optional properties: +- assigned-clocks: the same with "sdio" clock +- assigned-clock-parents: the default parent of "sdio" clock + +Examples: + +sdio0: sdio@20600000 { + compatible = "sprd,sdhci-r11"; + reg = <0 0x20600000 0 0x1000>; + interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; + + clock-names = "sdio", "enable"; + clocks = <&ap_clk CLK_EMMC_2X>, + <&apahb_gate CLK_EMMC_EB>; + assigned-clocks = <&ap_clk CLK_EMMC_2X>; + assigned-clock-parents = <&rpll CLK_RPLL_390M>; + + bus-width = <8>; + non-removable; + no-sdio; + no-sd; + cap-mmc-hw-reset; + status = "okay"; +}; |