diff options
| author | Zhou Jingyu <b02241@freescale.com> | 2010-04-16 16:09:40 +0800 |
|---|---|---|
| committer | Zhou Jingyu <b02241@freescale.com> | 2010-04-16 16:54:26 +0800 |
| commit | 494880383eef56dbba509bc8d54e47baf74d42c9 (patch) | |
| tree | f9363dd796ec7dd4284c24a3eb18af5491500b8c | |
| parent | a00cd885cdbe6f704e558483feafe46a722d6c17 (diff) | |
ENGR00122618 MX28: fix vddio value settings
MX28: fix vddio value settings
Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>
| -rw-r--r-- | arch/arm/mach-mx28/power.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/mach-mx28/power.c b/arch/arm/mach-mx28/power.c index a1d2f91680e..c1dde206026 100644 --- a/arch/arm/mach-mx28/power.c +++ b/arch/arm/mach-mx28/power.c @@ -29,9 +29,17 @@ static int get_voltage(struct mxs_regulator *sreg) { + int uv; struct mxs_platform_regulator_data *rdata = sreg->rdata; u32 val = __raw_readl(rdata->control_reg) & 0x1f; - int uv = rdata->min_voltage + val * + if (sreg->rdata->control_reg == + (u32)(REGS_POWER_BASE + HW_POWER_VDDIOCTRL)) { + if (val > 0x10) + val = 0x10; + uv = rdata->min_voltage + val * 50000; + pr_info("vddio = %d, val=%u\n", uv, val); + } else + uv = rdata->min_voltage + val * (rdata->max_voltage - rdata->min_voltage) / 0x1f; return uv; } @@ -59,7 +67,11 @@ static int set_voltage(struct mxs_regulator *sreg, int uv) if (uv < sreg->rdata->min_voltage || uv > sreg->rdata->max_voltage) return -EINVAL; - val = (uv - sreg->rdata->min_voltage) * 0x1f / + if (sreg->rdata->control_reg == + (u32)(REGS_POWER_BASE + HW_POWER_VDDIOCTRL)) + val = (uv - sreg->rdata->min_voltage) / 50000; + else + val = (uv - sreg->rdata->min_voltage) * 0x1f / (sreg->rdata->max_voltage - sreg->rdata->min_voltage); reg = (__raw_readl(sreg->rdata->control_reg) & ~0x1f); pr_debug("%s: calculated val %d\n", __func__, val); @@ -221,6 +233,7 @@ static struct mxs_platform_regulator_data vdda_data = { .max_voltage = 2275000, }; +#define MX28EVK_VDDIO_OFFSET 80000 static struct mxs_platform_regulator_data vddio_data = { .name = "vddio", .set_voltage = set_voltage, @@ -231,8 +244,8 @@ static struct mxs_platform_regulator_data vddio_data = { .set_mode = set_mode, .get_mode = get_mode, .control_reg = (u32)(REGS_POWER_BASE + HW_POWER_VDDIOCTRL), - .min_voltage = 2800000, - .max_voltage = 3575000, + .min_voltage = 2800000 + MX28EVK_VDDIO_OFFSET, + .max_voltage = 3600000 + MX28EVK_VDDIO_OFFSET, }; static struct regulator_init_data vddd_init = { @@ -282,8 +295,8 @@ static struct regulator_init_data vdda_init = { static struct regulator_init_data vddio_init = { .constraints = { .name = "vddio", - .min_uV = 2800000, - .max_uV = 3575000, + .min_uV = 2800000 + MX28EVK_VDDIO_OFFSET, + .max_uV = 3600000 + MX28EVK_VDDIO_OFFSET, .valid_modes_mask = REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |