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authorKevin Hilman <khilman@ti.com>2011-03-29 15:57:16 -0700
committerKevin Hilman <khilman@ti.com>2011-09-15 12:08:57 -0700
commit24d3194a2c9bc4d2315117915d4d22c395c07fd5 (patch)
treed7a5848a3b67f8288fc974bb0b0eab6dacb7ea97 /arch/arm/mach-omap2/vc44xx_data.c
parent08d1c9a3e2dc7a285db7c689c42963d0f5271c1f (diff)
OMAP3+: VC: abstract out channel configuration
VC channel configuration is programmed based on settings coming from the PMIC configuration. Currently, the VC channel to PMIC mapping is a simple one-to-one mapping. Whenever a VC channel parameter is configured (i2c slave addres, PMIC register address, on/ret/off command), the corresponding bits are enabled in the VC channel configuration register. If necessary, the programmability of channel configuration settings could be extended to board/PMIC files, however, because this patch changes the channel configuration to be programmed based on existing values from the PMIC settings, it may not be required. Also note that starting with OMAP4, where there are more than 2 channels, one channel is identified as the "default" channel. When any of the bits in the channel config for the other channels are zero, it means to use the default channel. The OMAP4 TRM (at least through NDA version Q) is wrong in describing which is the default channel. The default channel on OMAP4 is MPU, not CORE as decribed in the TRM. Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/vc44xx_data.c')
-rw-r--r--arch/arm/mach-omap2/vc44xx_data.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/vc44xx_data.c b/arch/arm/mach-omap2/vc44xx_data.c
index 5d104ff662b..1610bdedee6 100644
--- a/arch/arm/mach-omap2/vc44xx_data.c
+++ b/arch/arm/mach-omap2/vc44xx_data.c
@@ -44,15 +44,18 @@ static const struct omap_vc_common omap4_vc_common = {
.cmd_onlp_shift = OMAP4430_ONLP_SHIFT,
.cmd_ret_shift = OMAP4430_RET_SHIFT,
.cmd_off_shift = OMAP4430_OFF_SHIFT,
+ .cfg_channel_reg = OMAP4_PRM_VC_CFG_CHANNEL_OFFSET,
};
/* VC instance data for each controllable voltage line */
struct omap_vc_channel omap4_vc_mpu = {
+ .flags = OMAP_VC_CHANNEL_DEFAULT,
.common = &omap4_vc_common,
.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_MPU_L_OFFSET,
.smps_sa_mask = OMAP4430_SA_VDD_MPU_L_PRM_VC_SMPS_SA_MASK,
.smps_volra_mask = OMAP4430_VOLRA_VDD_MPU_L_MASK,
.smps_cmdra_mask = OMAP4430_CMDRA_VDD_MPU_L_MASK,
+ .cfg_channel_sa_shift = OMAP4430_SA_VDD_MPU_L_SHIFT,
};
struct omap_vc_channel omap4_vc_iva = {
@@ -61,6 +64,7 @@ struct omap_vc_channel omap4_vc_iva = {
.smps_sa_mask = OMAP4430_SA_VDD_IVA_L_PRM_VC_SMPS_SA_MASK,
.smps_volra_mask = OMAP4430_VOLRA_VDD_IVA_L_MASK,
.smps_cmdra_mask = OMAP4430_CMDRA_VDD_IVA_L_MASK,
+ .cfg_channel_sa_shift = OMAP4430_SA_VDD_IVA_L_SHIFT,
};
struct omap_vc_channel omap4_vc_core = {
@@ -69,5 +73,6 @@ struct omap_vc_channel omap4_vc_core = {
.smps_sa_mask = OMAP4430_SA_VDD_CORE_L_0_6_MASK,
.smps_volra_mask = OMAP4430_VOLRA_VDD_CORE_L_MASK,
.smps_cmdra_mask = OMAP4430_CMDRA_VDD_CORE_L_MASK,
+ .cfg_channel_sa_shift = OMAP4430_SA_VDD_CORE_L_SHIFT,
};