From: Thara Gopinath <thara@xxxxxx>
In OMAP3, for perfomrance reasons when VDD1 is at voltage above
1.075V, VDD2 should be at 1.15V for perfomrance reasons. This
patch introduce this cross VDD dependency for OMAP3 VDD1.
Signed-off-by: Thara Gopinath <thara@xxxxxx>
This patch has checkpatch warnings for line over 80 chars. It is not fixed for
code readability.
---
arch/arm/mach-omap2/voltage.c | 42 +++++++++++++++++++++++++++++++++++++++-
1 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c
index 92fe20d..8881c0c 100644
--- a/arch/arm/mach-omap2/voltage.c
+++ b/arch/arm/mach-omap2/voltage.c
@@ -191,6 +191,39 @@ static struct omap_volt_data omap44xx_vdd_core_volt_data[] = {
VOLT_DATA_DEFINE(0, 0, 0, 0),
};
+/* OMAP 3430 MPU Core VDD dependency table */
+static struct omap_vdd_dep_volt omap34xx_vdd1_vdd2_data[] = {
+ {.main_vdd_volt = OMAP3430_VDD_MPU_OPP1_UV, .dep_vdd_volt = OMAP4430_VDD_CORE_OPP50_UV},
+ {.main_vdd_volt = OMAP3430_VDD_MPU_OPP2_UV, .dep_vdd_volt = OMAP4430_VDD_CORE_OPP50_UV},
+ {.main_vdd_volt = OMAP3430_VDD_MPU_OPP3_UV, .dep_vdd_volt = OMAP4430_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = OMAP3430_VDD_MPU_OPP4_UV, .dep_vdd_volt = OMAP4430_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = OMAP3430_VDD_MPU_OPP5_UV, .dep_vdd_volt = OMAP4430_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = 0, .dep_vdd_volt = 0},
+};
+
+static struct omap_vdd_dep_info omap34xx_vdd1_dep_info[] = {
+ {
+ .name = "core",
+ .dep_table = omap34xx_vdd1_vdd2_data,
+ },
+};
+
+/* OMAP 3630 MPU Core VDD dependency table */
+static struct omap_vdd_dep_volt omap36xx_vdd1_vdd2_data[] = {
+ {.main_vdd_volt = OMAP3630_VDD_MPU_OPP50_UV, .dep_vdd_volt = OMAP3630_VDD_CORE_OPP50_UV},
+ {.main_vdd_volt = OMAP3630_VDD_MPU_OPP100_UV, .dep_vdd_volt = OMAP3630_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = OMAP3630_VDD_MPU_OPP120_UV, .dep_vdd_volt = OMAP3630_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = OMAP3630_VDD_MPU_OPP1G_UV, .dep_vdd_volt = OMAP3630_VDD_CORE_OPP100_UV},
+ {.main_vdd_volt = 0, .dep_vdd_volt = 0},
+};
+
+static struct omap_vdd_dep_info omap36xx_vdd1_dep_info[] = {
+ {
+ .name = "core",
+ .dep_table = omap36xx_vdd1_vdd2_data,
+ },
+};
+
static struct dentry *voltage_dir;
/* Init function pointers */
@@ -696,10 +729,15 @@ static int __init omap3_vdd_data_configure(struct omap_vdd_info *vdd)
}
if (!strcmp(vdd->voltdm.name, "mpu")) {
- if (cpu_is_omap3630())
+ if (cpu_is_omap3630()) {
vdd->volt_data = omap36xx_vddmpu_volt_data;
- else
+ vdd->dep_vdd_info = omap36xx_vdd1_dep_info;
+ vdd->nr_dep_vdd = ARRAY_SIZE(omap36xx_vdd1_dep_info);
+ } else {
vdd->volt_data = omap34xx_vddmpu_volt_data;
+ vdd->dep_vdd_info = omap34xx_vdd1_dep_info;
+ vdd->nr_dep_vdd = ARRAY_SIZE(omap34xx_vdd1_dep_info);
+ }
vdd->vp_reg.tranxdone_status = OMAP3430_VP1_TRANXDONE_ST_MASK;
vdd->vc_reg.cmdval_reg = OMAP3_PRM_VC_CMD_VAL_0_OFFSET;
--
1.7.0.4
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