Implement support for the PMC_IMPL_E_33V_PWR register which replaces
PMC_PWR_DET register interface of the SoC generations preceding
Tegra186. Also add the voltage bit offsets to the tegra186_io_pads[]
table and the AO_HV pad.
Signed-off-by: Aapo Vienamo <avienamo@xxxxxxxxxx>
Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
drivers/soc/tegra/pmc.c | 55 ++++++++++++++++++++++++++++++++++---------------
include/soc/tegra/pmc.h | 1 +
2 files changed, 39 insertions(+), 17 deletions(-)
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 2d6f3fc..f926332 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -65,6 +65,8 @@
#define PWRGATE_STATUS 0x38
+#define PMC_IMPL_E_33V_PWR 0x40
+
#define PMC_PWR_DET 0x48
#define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
@@ -154,6 +156,7 @@ struct tegra_pmc_soc {
bool has_tsense_reset;
bool has_gpu_clamps;
bool needs_mbist_war;
+ bool has_impl_33v_pwr;
const struct tegra_io_pad_soc *io_pads;
unsigned int num_io_pads;
@@ -1073,20 +1076,29 @@ int tegra_io_pad_set_voltage(enum tegra_io_pad id,
mutex_lock(&pmc->powergates_lock);
- /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
- value = tegra_pmc_readl(PMC_PWR_DET);
- value |= BIT(pad->voltage);
- tegra_pmc_writel(value, PMC_PWR_DET);
+ if (pmc->soc->has_impl_33v_pwr) {
+ value = tegra_pmc_readl(PMC_IMPL_E_33V_PWR);
+ if (voltage == TEGRA_IO_PAD_1800000UV)
+ value &= ~BIT(pad->voltage);
+ else
+ value |= BIT(pad->voltage);
+ tegra_pmc_writel(value, PMC_IMPL_E_33V_PWR);
+ } else {
+ /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
+ value = tegra_pmc_readl(PMC_PWR_DET);
+ value |= BIT(pad->voltage);
+ tegra_pmc_writel(value, PMC_PWR_DET);
- /* update I/O voltage */
- value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
+ /* update I/O voltage */
+ value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
- if (voltage == TEGRA_IO_PAD_1800000UV)
- value &= ~BIT(pad->voltage);
- else
- value |= BIT(pad->voltage);
+ if (voltage == TEGRA_IO_PAD_1800000UV)
+ value &= ~BIT(pad->voltage);
+ else
+ value |= BIT(pad->voltage);
- tegra_pmc_writel(value, PMC_PWR_DET_VALUE);
+ tegra_pmc_writel(value, PMC_PWR_DET_VALUE);
+ }
mutex_unlock(&pmc->powergates_lock);
@@ -1108,7 +1120,10 @@ int tegra_io_pad_get_voltage(enum tegra_io_pad id)
if (pad->voltage == UINT_MAX)
return -ENOTSUPP;
- value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
+ if (pmc->soc->has_impl_33v_pwr)
+ value = tegra_pmc_readl(PMC_IMPL_E_33V_PWR);
+ else
+ value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
if ((value & BIT(pad->voltage)) == 0)
return TEGRA_IO_PAD_1800000UV;
@@ -1567,6 +1582,7 @@ static const struct tegra_pmc_soc tegra30_pmc_soc = {
.cpu_powergates = tegra30_cpu_powergates,
.has_tsense_reset = true,
.has_gpu_clamps = false,
+ .has_impl_33v_pwr = false,
.num_io_pads = 0,
.io_pads = NULL,
.regs = &tegra20_pmc_regs,
@@ -1609,6 +1625,7 @@ static const struct tegra_pmc_soc tegra114_pmc_soc = {
.cpu_powergates = tegra114_cpu_powergates,
.has_tsense_reset = true,
.has_gpu_clamps = false,
+ .has_impl_33v_pwr = false,
.num_io_pads = 0,
.io_pads = NULL,
.regs = &tegra20_pmc_regs,
@@ -1689,6 +1706,7 @@ static const struct tegra_pmc_soc tegra124_pmc_soc = {
.cpu_powergates = tegra124_cpu_powergates,
.has_tsense_reset = true,
.has_gpu_clamps = true,
+ .has_impl_33v_pwr = false,
.num_io_pads = ARRAY_SIZE(tegra124_io_pads),
.io_pads = tegra124_io_pads,
.regs = &tegra20_pmc_regs,
@@ -1778,6 +1796,7 @@ static const struct tegra_pmc_soc tegra210_pmc_soc = {
.cpu_powergates = tegra210_cpu_powergates,
.has_tsense_reset = true,
.has_gpu_clamps = true,
+ .has_impl_33v_pwr = false,
.needs_mbist_war = true,
.num_io_pads = ARRAY_SIZE(tegra210_io_pads),
.io_pads = tegra210_io_pads,
@@ -1806,7 +1825,7 @@ static const struct tegra_io_pad_soc tegra186_io_pads[] = {
{ .id = TEGRA_IO_PAD_HDMI_DP0, .dpd = 28, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_HDMI_DP1, .dpd = 29, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_PEX_CNTRL, .dpd = 32, .voltage = UINT_MAX },
- { .id = TEGRA_IO_PAD_SDMMC2_HV, .dpd = 34, .voltage = UINT_MAX },
+ { .id = TEGRA_IO_PAD_SDMMC2_HV, .dpd = 34, .voltage = 5 },
{ .id = TEGRA_IO_PAD_SDMMC4, .dpd = 36, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_CAM, .dpd = 38, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_DSIB, .dpd = 40, .voltage = UINT_MAX },
@@ -1818,12 +1837,13 @@ static const struct tegra_io_pad_soc tegra186_io_pads[] = {
{ .id = TEGRA_IO_PAD_CSIF, .dpd = 46, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_SPI, .dpd = 47, .voltage = UINT_MAX },
{ .id = TEGRA_IO_PAD_UFS, .dpd = 49, .voltage = UINT_MAX },
- { .id = TEGRA_IO_PAD_DMIC_HV, .dpd = 52, .voltage = UINT_MAX },
+ { .id = TEGRA_IO_PAD_DMIC_HV, .dpd = 52, .voltage = 2 },
{ .id = TEGRA_IO_PAD_EDP, .dpd = 53, .voltage = UINT_MAX },
- { .id = TEGRA_IO_PAD_SDMMC1_HV, .dpd = 55, .voltage = UINT_MAX },
- { .id = TEGRA_IO_PAD_SDMMC3_HV, .dpd = 56, .voltage = UINT_MAX },
+ { .id = TEGRA_IO_PAD_SDMMC1_HV, .dpd = 55, .voltage = 4 },
+ { .id = TEGRA_IO_PAD_SDMMC3_HV, .dpd = 56, .voltage = 6 },
{ .id = TEGRA_IO_PAD_CONN, .dpd = 60, .voltage = UINT_MAX },
- { .id = TEGRA_IO_PAD_AUDIO_HV, .dpd = 61, .voltage = UINT_MAX },
+ { .id = TEGRA_IO_PAD_AUDIO_HV, .dpd = 61, .voltage = 1 },
+ { .id = TEGRA_IO_PAD_AO_HV, .dpd = UINT_MAX, .voltage = 0 },
};
static const struct tegra_pmc_regs tegra186_pmc_regs = {
@@ -1876,6 +1896,7 @@ static const struct tegra_pmc_soc tegra186_pmc_soc = {
.cpu_powergates = NULL,
.has_tsense_reset = false,
.has_gpu_clamps = false,
+ .has_impl_33v_pwr = true,
.num_io_pads = ARRAY_SIZE(tegra186_io_pads),
.io_pads = tegra186_io_pads,
.regs = &tegra186_pmc_regs,
diff --git a/include/soc/tegra/pmc.h b/include/soc/tegra/pmc.h
index c32bf91..445aa66 100644
--- a/include/soc/tegra/pmc.h
+++ b/include/soc/tegra/pmc.h
@@ -134,6 +134,7 @@ enum tegra_io_pad {
TEGRA_IO_PAD_USB2,
TEGRA_IO_PAD_USB3,
TEGRA_IO_PAD_USB_BIAS,
+ TEGRA_IO_PAD_AO_HV,
};
/* deprecated, use TEGRA_IO_PAD_{HDMI,LVDS} instead */
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
