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Groups > linux.kernel > #1402983
| From | Peter Ujfalusi <peter.ujfalusi@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 05/14] mfd: twl6040: Register child device for twl6040-pdmclk |
| Date | 2016-05-18 15:50 +0200 |
| Message-ID | <rAa1j-2O5-3@gated-at.bofh.it> (permalink) |
| References | <rAa1j-2O5-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
The McPDM in OMAP4/5 is using the pdmclk from twl6040 as functional clock. The twl6040-pdmclk driver provides a clock which can be used to make sure that the pdmclk is active when the McPDM is in use. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- Documentation/devicetree/bindings/mfd/twl6040.txt | 1 + drivers/mfd/twl6040.c | 5 +++++ include/linux/mfd/twl6040.h | 2 +- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/mfd/twl6040.txt b/Documentation/devicetree/bindings/mfd/twl6040.txt index e6afdfa3543d..9a98ee7c323d 100644 --- a/Documentation/devicetree/bindings/mfd/twl6040.txt +++ b/Documentation/devicetree/bindings/mfd/twl6040.txt @@ -12,6 +12,7 @@ Required properties: - interrupt-parent: The parent interrupt controller - gpio-controller: - #gpio-cells = <1>: twl6040 provides GPO lines. +- #clock-cells = <0>; twl6040 is a provider of pdmclk which is used by McPDM - twl6040,audpwron-gpio: Power on GPIO line for the twl6040 - vio-supply: Regulator for the twl6040 VIO supply diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c index 2596546553aa..873628a1bd79 100644 --- a/drivers/mfd/twl6040.c +++ b/drivers/mfd/twl6040.c @@ -782,6 +782,11 @@ static int twl6040_probe(struct i2c_client *client, cell->name = "twl6040-gpo"; children++; + /* PDM clock support */ + cell = &twl6040->cells[children]; + cell->name = "twl6040-pdmclk"; + children++; + /* The chip is powered down so mark regmap to cache only and dirty */ regcache_cache_only(twl6040->regmap, true); regcache_mark_dirty(twl6040->regmap); diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 8015db974157..ef0bb07c3f3d 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -168,7 +168,7 @@ #define TWL6040_VIBROCDET 0x20 #define TWL6040_TSHUTDET 0x40 -#define TWL6040_CELLS 3 +#define TWL6040_CELLS 4 #define TWL6040_REV_ES1_0 0x00 #define TWL6040_REV_ES1_1 0x01 /* Rev ES1.1 and ES1.2 */ -- 2.8.2
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[PATCH 05/14] mfd: twl6040: Register child device for twl6040-pdmclk Peter Ujfalusi <peter.ujfalusi@ti.com> - 2016-05-18 15:50 +0200 Re: [PATCH 05/14] mfd: twl6040: Register child device for twl6040-pdmclk Rob Herring <robh@kernel.org> - 2016-05-19 01:40 +0200
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