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msm: acpuclock-8960: Drop S8 regulator vote to 2.1V

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Additional power saving can be achieved by allowing this regulator to
go down to 2.1V. This should have no effect on the HFPLLs, as they
run from a lower voltage sub-regulator (L23), not directly from S8.

Change-Id: I61a46a2a3775a2810f05a953dece0586325fa805
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
This commit is contained in:
Matt Wagantall
2011-12-13 13:33:47 -08:00
committed by Linux Build Service Account
parent bd2c2e3abd
commit 627f4315d9
2 changed files with 7 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm/mach-msm/acpuclock-8960.c
View File

@@ -147,7 +147,7 @@ static struct scalable scalable_8960[] = {
.vreg[VREG_DIG] = { "krait0_dig", 1150000,
RPM_VREG_VOTER1,
RPM_VREG_ID_PM8921_S3 },
.vreg[VREG_HFPLL_A] = { "hfpll", 2200000,
.vreg[VREG_HFPLL_A] = { "hfpll", 2100000,
RPM_VREG_VOTER1,
RPM_VREG_ID_PM8921_S8 },
.vreg[VREG_HFPLL_B] = { "hfpll", 1800000,
@@ -165,7 +165,7 @@ static struct scalable scalable_8960[] = {
.vreg[VREG_DIG] = { "krait0_dig", 1150000,
RPM_VREG_VOTER2,
RPM_VREG_ID_PM8921_S3 },
.vreg[VREG_HFPLL_A] = { "hfpll", 2200000,
.vreg[VREG_HFPLL_A] = { "hfpll", 2100000,
RPM_VREG_VOTER2,
RPM_VREG_ID_PM8921_S8 },
.vreg[VREG_HFPLL_B] = { "hfpll", 1800000,
@@ -176,7 +176,7 @@ static struct scalable scalable_8960[] = {
.hfpll_base = MSM_HFPLL_BASE + 0x400,
.aux_clk_sel = MSM_APCS_GCC_BASE + 0x028,
.l2cpmr_iaddr = L2CPMR_IADDR,
.vreg[VREG_HFPLL_A] = { "hfpll", 2200000,
.vreg[VREG_HFPLL_A] = { "hfpll", 2100000,
RPM_VREG_VOTER6,
RPM_VREG_ID_PM8921_S8 },
.vreg[VREG_HFPLL_B] = { "hfpll", 1800000,
@@ -529,14 +529,14 @@ static void hfpll_enable(struct scalable *sc)
if (cpu_is_msm8960()) {
rc = rpm_vreg_set_voltage(sc->vreg[VREG_HFPLL_A].rpm_vreg_id,
sc->vreg[VREG_HFPLL_A].rpm_vreg_voter, 2200000,
2200000, 0);
sc->vreg[VREG_HFPLL_A].rpm_vreg_voter, 2100000,
sc->vreg[VREG_HFPLL_A].max_vdd, 0);
if (rc)
pr_err("%s regulator enable failed (%d)\n",
sc->vreg[VREG_HFPLL_A].name, rc);
rc = rpm_vreg_set_voltage(sc->vreg[VREG_HFPLL_B].rpm_vreg_id,
sc->vreg[VREG_HFPLL_B].rpm_vreg_voter, 1800000,
1800000, 0);
sc->vreg[VREG_HFPLL_B].max_vdd, 0);
if (rc)
pr_err("%s regulator enable failed (%d)\n",
sc->vreg[VREG_HFPLL_B].name, rc);

2
arch/arm/mach-msm/board-8960-regulator.c
View File

@@ -487,7 +487,7 @@ msm_rpm_regulator_init_data[] __devinitdata = {
RPM_SMPS(S3, 0, 1, 1, 500000, 1150000, NULL, 100000, 4p80),
RPM_SMPS(S4, 1, 1, 0, 1800000, 1800000, NULL, 100000, 3p20),
RPM_SMPS(S7, 0, 1, 0, 1150000, 1150000, NULL, 100000, 3p20),
RPM_SMPS(S8, 1, 1, 1, 2200000, 2200000, NULL, 100000, 1p60),
RPM_SMPS(S8, 1, 1, 1, 2100000, 2100000, NULL, 100000, 1p60),
/* ID a_on pd ss min_uV max_uV supply sys_uA init_ip */
RPM_LDO(L1, 1, 1, 0, 1050000, 1050000, "8921_s4", 0, 10000),