From mboxrd@z Thu Jan 1 00:00:00 1970 From: petr.cvek@tul.cz (Petr Cvek) Date: Mon, 28 Sep 2015 23:32:25 +0200 Subject: [PATCH v4 11/26] ARM: pxa: magician: Optimize EGPIO initial values In-Reply-To: References: Message-ID: <5609B1E9.4020508@tul.cz> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch optimizes initial values of the EGPIO chip driver. GSM and sound should be powered off during boot. A weak accumulator and a powered GSM sometimes cause a system reboot. A charging current should be as high as possible during boot. Signed-off-by: Petr Cvek --- arch/arm/mach-pxa/magician.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c index 2c487ae..bf0760e 100644 --- a/arch/arm/mach-pxa/magician.c +++ b/arch/arm/mach-pxa/magician.c @@ -263,9 +263,12 @@ static struct htc_egpio_chip egpio_chips[] = { .num_gpios = 24, .direction = HTC_EGPIO_OUTPUT, /* - * Depends on modules configuration + * NOTICE LCD valid power on sequence + * Disable GSM and sound + * Low accu can cause reboot, set 500mA charging + * OR 0x8000 for LCD backlight (debug printks) */ - .initial_values = 0x40, + .initial_values = 0x2020c0, }, [1] = { .reg_start = 4, -- 1.7.12.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753682AbbI1VcZ (ORCPT ); Mon, 28 Sep 2015 17:32:25 -0400 Received: from bubo.tul.cz ([147.230.16.1]:45779 "EHLO bubo.tul.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752997AbbI1VcX (ORCPT ); Mon, 28 Sep 2015 17:32:23 -0400 From: Petr Cvek Subject: [PATCH v4 11/26] ARM: pxa: magician: Optimize EGPIO initial values To: robert.jarzmik@free.fr, philipp.zabel@gmail.com, daniel@zonque.org, haojian.zhuang@gmail.com, linux@arm.linux.org.uk References: Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Message-ID: <5609B1E9.4020508@tul.cz> Date: Mon, 28 Sep 2015 23:32:25 +0200 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch optimizes initial values of the EGPIO chip driver. GSM and sound should be powered off during boot. A weak accumulator and a powered GSM sometimes cause a system reboot. A charging current should be as high as possible during boot. Signed-off-by: Petr Cvek --- arch/arm/mach-pxa/magician.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c index 2c487ae..bf0760e 100644 --- a/arch/arm/mach-pxa/magician.c +++ b/arch/arm/mach-pxa/magician.c @@ -263,9 +263,12 @@ static struct htc_egpio_chip egpio_chips[] = { .num_gpios = 24, .direction = HTC_EGPIO_OUTPUT, /* - * Depends on modules configuration + * NOTICE LCD valid power on sequence + * Disable GSM and sound + * Low accu can cause reboot, set 500mA charging + * OR 0x8000 for LCD backlight (debug printks) */ - .initial_values = 0x40, + .initial_values = 0x2020c0, }, [1] = { .reg_start = 4, -- 1.7.12.1