On 12/5/11, Thomas Abraham <thomas.abraham@xxxxxxxxxx> wrote:
> The buck7 regulator of max8997 pmic which provides the power source to lcd
> panel
> and the lvds transmitter is allowed to be controlled by the platform-lcd
> driver.
> It is not required to apply the voltage source by default. Also, the voltage
> range for buck7 regulator is modified as the per the values in the
> datasheet.
>
> Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx>
> ---
> arch/arm/mach-exynos/mach-origen.c | 12 +++++++-----
> 1 files changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/mach-exynos/mach-origen.c
> b/arch/arm/mach-exynos/mach-origen.c
> index f56d027..5456254 100644
> --- a/arch/arm/mach-exynos/mach-origen.c
> +++ b/arch/arm/mach-exynos/mach-origen.c
> @@ -126,7 +126,7 @@ static struct regulator_consumer_supply __initdata
> buck3_consumer[] = {
> REGULATOR_SUPPLY("vdd_g3d", "mali_drm"), /* G3D */
> };
> static struct regulator_consumer_supply __initdata buck7_consumer[] = {
> - REGULATOR_SUPPLY("vcc", "platform-lcd"), /* LCD */
> + REGULATOR_SUPPLY("vcc_lcd", "platform-lcd.0"), /* LCD */
> };
>
> static struct regulator_init_data __initdata max8997_ldo1_data = {
> @@ -379,11 +379,11 @@ static struct regulator_init_data __initdata
> max8997_buck5_data = {
> static struct regulator_init_data __initdata max8997_buck7_data = {
> .constraints = {
> .name = "VDD_LCD_3.3V",
> - .min_uV = 3300000,
> - .max_uV = 3300000,
> + .min_uV = 750000,
> + .max_uV = 3900000,
It can support the voltage change at buck itself, but in board it's
fixed. I'm not sure it's correct usage at board file.
I think original code is better to understand and use it as name, it's
fixed v3.3 voltage.
Thank you,
Kyungmin Park
> .boot_on = 1,
> - .apply_uV = 1,
> - .valid_ops_mask = REGULATOR_CHANGE_STATUS,
> + .valid_ops_mask = REGULATOR_CHANGE_STATUS |
> + REGULATOR_CHANGE_VOLTAGE,
> .state_mem = {
> .disabled = 1
> },
> @@ -562,6 +562,8 @@ static void lcd_hv070wsa_set_power(struct plat_lcd_data
> *pd, unsigned int power)
>
> static struct plat_lcd_data origen_lcd_hv070wsa_data = {
> .set_power = lcd_hv070wsa_set_power,
> + .min_uV = 3300000,
> + .max_uV = 3300000,
> };
>
> static struct platform_device origen_lcd_hv070wsa = {
> --
> 1.6.6.rc2
>
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