From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Sat, 01 Feb 2014 18:55:42 +0100 Subject: [PATCH] ARM: pxa: Add dummy backlight power supply on Mitac Mio A701 References: <1387532812-11742-1-git-send-email-thierry.reding@gmail.com> <87zjn9v7xx.fsf@free.fr> <87txd8vka8.fsf@free.fr> <87ha8y76rn.fsf@free.fr> Message-ID: <87k3deiuox.fsf@free.fr> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Robert Jarzmik writes: >> 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. ... zip ... Hi Eric and Russell, Since more than a month I've been trying to have a fix applied in the PXA tree, since v3.13-rc6. I cannot reach Haojian, and Arnd seems unresponsive too. The history mails are in [1], the patch in [2]. Your are the 2 other maintainers of the PXA tree, Could you please help me ? Cheers. -- Robert [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-January/223116.html [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-December/221013.html ---8>--- From: Thierry Reding Subject: [PATCH] ARM: pxa: Add dummy backlight power supply on Mitac Mio A701 To: Haojian Zhuang , Robert Jarzmik Cc: linux-pwm at vger.kernel.org, linux-arm-kernel at lists.infradead.org Date: Fri, 20 Dec 2013 10:46:52 +0100 (6 weeks, 1 day, 8 hours ago) Message-Id: <1387532812-11742-1-git-send-email-thierry.reding@gmail.com> X-Mailer: git-send-email 1.8.4.2 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 f70583fee59f..29997bde277d 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 @@ -714,6 +715,10 @@ 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; @@ -753,6 +758,10 @@ 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) -- 1.8.4.2