| Message ID | 1332834828-21740-1-git-send-email-l.majewski@samsung.com |
|---|---|
| State | Accepted |
| Commit | 4d86bf086009a4edfe747341e7cb83bf46e6f022 |
| Delegated to: | Minkyu Kang |
| Headers | show |
Dear Lukasz Majewski, On 27 March 2012 16:53, Lukasz Majewski <l.majewski@samsung.com> wrote: > This patch enables LDO4 power line for preparing proper voltages to be > measured by ADC converter. > This measurement is used for determination of target board HW revision. > > Test HW: > Universal_C210 (Exynos4210) rev. 0.0 > > Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Minkyu Kang <mk7.kang@samsung.com> > --- > board/samsung/universal_c210/universal.c | 25 ++++++++++++++++++++++--- > include/max8998_pmic.h | 1 + > 2 files changed, 23 insertions(+), 3 deletions(-) > applied to u-boot-samsung
diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c index 334a346..70f03e9 100644 --- a/board/samsung/universal_c210/universal.c +++ b/board/samsung/universal_c210/universal.c @@ -59,13 +59,13 @@ int board_init(void) gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210; gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; - check_hw_revision(); - printf("HW Revision:\t0x%x\n", board_rev); - #if defined(CONFIG_PMIC) pmic_init(); #endif + check_hw_revision(); + printf("HW Revision:\t0x%x\n", board_rev); + return 0; } @@ -110,10 +110,27 @@ static unsigned short get_adc_value(int channel) return ret; } +static int adc_power_control(int on) +{ + int ret; + struct pmic *p = get_pmic(); + + if (pmic_probe(p)) + return -1; + + ret = pmic_set_output(p, + MAX8998_REG_ONOFF1, + MAX8998_LDO4, !!on); + + return ret; +} + static unsigned int get_hw_revision(void) { int hwrev, mode0, mode1; + adc_power_control(1); + mode0 = get_adc_value(1); /* HWREV_MODE0 */ mode1 = get_adc_value(2); /* HWREV_MODE1 */ @@ -136,6 +153,8 @@ static unsigned int get_hw_revision(void) debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev); + adc_power_control(0); + return hwrev; } diff --git a/include/max8998_pmic.h b/include/max8998_pmic.h index 10c892a..ca21f88 100644 --- a/include/max8998_pmic.h +++ b/include/max8998_pmic.h @@ -75,6 +75,7 @@ enum { }; #define MAX8998_LDO3 (1 << 2) +#define MAX8998_LDO4 (1 << 1) #define MAX8998_LDO8 (1 << 5) #define MAX8998_SAFEOUT1 (1 << 4)