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 <petr.cvek@xxxxxx>
---
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
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