From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Mon, 13 Jan 2014 00:43:11 +0100 Subject: [PATCH] ARM: pxa: Add dummy backlight power supply on Mitac Mio A701 In-Reply-To: <87zjn9v7xx.fsf@free.fr> (Robert Jarzmik's message of "Mon, 06 Jan 2014 09:19:22 +0100") References: <1387532812-11742-1-git-send-email-thierry.reding@gmail.com> <87zjn9v7xx.fsf@free.fr> Message-ID: <87txd8vka8.fsf@free.fr> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Arnd, I cannot reach Haojian, and my platform is currently screen-broken without Thierry's patch (see [1] and [2]). I'm trying to have it since -rc6, with no luck. Could you handle it in arm-soc fixes for -rc9 (if it happens) please ? Cheers. -- Robert [1] http://www.spinics.net/lists/arm-kernel/msg298187.html [2] Patch : >>From 7ca9a136dc67ac4c302b15a333e8cfa1c3fc051b Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 20 Dec 2013 10:46:52 +0100 Subject: [PATCH] ARM: pxa: Add dummy backlight power supply on Mitac Mio A701 Recent changes to the pwm-backlight driver have made the power supply mandatory. There is code in the regulator core to deal with situations where no regulator is specified and provide a dummy, but that works on DT-based boards only. The situation can be remedied by adding a dummy regulator during board initialization. Tested-by: Robert Jarzmik Signed-off-by: Thierry Reding --- arch/arm/mach-pxa/mioa701.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c index c2d8625..a8fdcb7 100644 --- a/arch/arm/mach-pxa/mioa701.c +++ b/arch/arm/mach-pxa/mioa701.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include @@ -723,6 +724,10 @@ static struct gpio global_gpios[] = { { GPIO56_MT9M111_nOE, GPIOF_OUT_INIT_LOW, "Camera nOE" }, }; +static struct regulator_consumer_supply fixed_5v0_consumers[] = { + REGULATOR_SUPPLY("power", "pwm-backlight"), +}; + static void __init mioa701_machine_init(void) { int rc; @@ -762,6 +767,10 @@ static void __init mioa701_machine_init(void) pxa_set_i2c_info(&i2c_pdata); pxa27x_set_i2c_power_info(NULL); pxa_set_camera_info(&mioa701_pxacamera_platform_data); + + regulator_register_always_on(0, "fixed-5.0V", fixed_5v0_consumers, + ARRAY_SIZE(fixed_5v0_consumers), + 5000000); } static void mioa701_machine_exit(void) -- 1.7.10.4