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| author | Balaji T K <balajitk@ti.com> | 2014-02-19 20:26:40 +0530 |
|---|---|---|
| committer | Chris Ball <chris@printf.net> | 2014-03-04 11:44:47 -0500 |
| commit | 11469e0bb1c5eedd3b489a4b19dbd26c02577674 (patch) | |
| tree | 62ead13af6af8dba9426277a2cfced9bc5b48d4f /Documentation | |
| parent | 987fd49b894ec964231dfc5b6bbb2bc12e2b56b5 (diff) | |
| download | linux-11469e0bb1c5eedd3b489a4b19dbd26c02577674.tar.gz linux-11469e0bb1c5eedd3b489a4b19dbd26c02577674.tar.bz2 linux-11469e0bb1c5eedd3b489a4b19dbd26c02577674.zip | |
regulator: add pbias regulator support
pbias register controls internal power supply to sd card i/o pads
in most OMAPs (OMAP2-5, DRA7).
Control bits for selecting voltage level and
enabling/disabling are in the same PBIAS register.
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Mark Brown <broonie@linaro.org>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Ball <chris@printf.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/pbias-regulator.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/pbias-regulator.txt b/Documentation/devicetree/bindings/regulator/pbias-regulator.txt new file mode 100644 index 000000000000..32aa26f1e434 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/pbias-regulator.txt @@ -0,0 +1,27 @@ +PBIAS internal regulator for SD card dual voltage i/o pads on OMAP SoCs. + +Required properties: +- compatible: + - "ti,pbias-omap" for OMAP2, OMAP3, OMAP4, OMAP5, DRA7. +- reg: pbias register offset from syscon base and size of pbias register. +- syscon : phandle of the system control module +- regulator-name : should be + pbias_mmc_omap2430 for OMAP2430, OMAP3 SoCs + pbias_sim_omap3 for OMAP3 SoCs + pbias_mmc_omap4 for OMAP4 SoCs + pbias_mmc_omap5 for OMAP5 and DRA7 SoC + +Optional properties: +- Any optional property defined in bindings/regulator/regulator.txt + +Example: + + pbias_regulator: pbias_regulator { + compatible = "ti,pbias-omap"; + reg = <0 0x4>; + syscon = <&omap5_padconf_global>; + pbias_mmc_reg: pbias_mmc_omap5 { + regulator-name = "pbias_mmc_omap5"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3000000>; + }; |