On 04/22/2014 01:58 PM, Nishanth Menon wrote:
On 04/22/2014 01:52 PM, Dave Gerlach wrote:The VTT regulator for DDR3 termination on the am437x-gp-evm is controlled by a gpio. It is configured by the bootloader so here we define an always-on, fixed voltage regulator to hold the gpio. Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx> --- arch/arm/boot/dts/am437x-gp-evm.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index a055f7f..e68d12c 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -27,6 +27,17 @@ enable-active-high; }; + vtt_fixed: fixedregulator-vtt {Would you like to consider any explicit pinctrl here?
Yes, it's a good idea for me to add that in for next version.
+ compatible = "regulator-fixed"; + regulator-name = "vtt_fixed"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + regulator-boot-on; + enable-active-high; + gpio = <&gpio5 7 GPIO_ACTIVE_HIGH>; + }; + backlight { compatible = "pwm-backlight"; pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;Do we still need https://patchwork.kernel.org/patch/3871201/ (prevent hwmod from resetting GPIO5) ?
Yes, without preventing the reset boot still hangs. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
