TWL6030 below table shows the default state each LDO's can
be put into.
+---------------------------------------------------------------+
| LDO | Usage | state |
+---------------------------------------------------------------+
| VANA | sources internal | Always ON |
| | analog voltage | |
+---------------------------------------------------------------+
| VAUX1 | eMMC | MMC Driver needs to handle |
| | | |
+---------------------------------------------------------------+
| VAUX2 | A/V switch | Driver needs to handle |
+---------------------------------------------------------------+
| VAUX3 | 5MP CAMp | Driver needs to handle |
+---------------------------------------------------------------+
| VCXIO | supplies DPLL's | Can be put OFF when OMAP hits |
| | | OFF mode. |
+---------------------------------------------------------------+
| VDAC | HDMI, CDC chip | Always ON |
+---------------------------------------------------------------+
| VMMC | MMC | Driver needs to handle |
+---------------------------------------------------------------+
| VPP | VPP pins of OMAP | Used while burning fuses in |
| | | OMAP. This can be turned OFF |
| | | by default when kernel comes |
| | | up. |
+---------------------------------------------------------------+
| VRTC | VBRTC/RTC | Always ON |
+---------------------------------------------------------------+
| VUSB | USB OTG pins | Driver needs to handle |
+---------------------------------------------------------------+
| VUSIM | VDDS_SIM, SIM cage | Driver needs to handle. |
+---------------------------------------------------------------+
| CLK32K| 32KHz o/p clk | WIFI/BT/FM/GPS driver needs |
| | | to handle |
+---------------------------------------------------------------+
- VDAC, VANA, VCXIO and VRTC should be kept always ON. As per the table above.
Need REVISIT on below LDO's:
- VAUX1 kept ON now. MMC driver needs to take care of enabling/disabling
as needed. Issue seen with eMMC bootup with VAUX1 disabled by default.
- VAUX3 is kept ON now. CAM/syslink should handle this regulator. This
is only for 5MP camera on Blaze.
- CLK32KG is pseudo regulator, on Blaze/panda it supplies GPS/WIFI/BT/FM/GPS
Drivers should handle it. Keeping it always ON as of now.
Signed-off-by: Girish S G <[email protected]>
---
arch/arm/mach-omap2/board-4430sdp.c | 4 ++++
arch/arm/mach-omap2/board-omap4panda.c | 3 +++
2 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c
b/arch/arm/mach-omap2/board-4430sdp.c
index 63de2d3..04b7770 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -440,6 +440,7 @@ static struct regulator_init_data sdp4430_vmmc = {
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
.num_consumer_supplies = 1,
.consumer_supplies = sdp4430_vmmc_supply,
@@ -479,6 +480,7 @@ static struct regulator_init_data sdp4430_vana = {
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
@@ -501,6 +503,7 @@ static struct regulator_init_data sdp4430_vdac = {
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
@@ -519,6 +522,7 @@ static struct regulator_init_data sdp4430_vusb = {
static struct regulator_init_data sdp4430_clk32kg = {
.constraints = {
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
diff --git a/arch/arm/mach-omap2/board-omap4panda.c
b/arch/arm/mach-omap2/board-omap4panda.c
index 0cfe200..3415a5e 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -337,6 +337,7 @@ static struct regulator_init_data omap4_panda_vana = {
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
@@ -359,6 +360,7 @@ static struct regulator_init_data omap4_panda_vdac = {
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
@@ -377,6 +379,7 @@ static struct regulator_init_data omap4_panda_vusb = {
static struct regulator_init_data omap4_panda_clk32kg = {
.constraints = {
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
};
--
1.6.0.4
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