diff options
| author | Nishanth Menon <nm@ti.com> | 2012-01-05 12:11:21 -0600 |
|---|---|---|
| committer | Roman Shaposhnikov <x0166637@ti.com> | 2012-04-17 21:19:28 +0300 |
| commit | 113b6f0df98531e4be1174c0eca8f72abe5ac77c (patch) | |
| tree | cfe91725786d9f0768f6a6ab7a0fe305b476333e | |
| parent | 23b13498e41d2efb5d7d1ac4f60e87df717b7c80 (diff) | |
| download | kernel_samsung_espresso10-113b6f0df98531e4be1174c0eca8f72abe5ac77c.zip kernel_samsung_espresso10-113b6f0df98531e4be1174c0eca8f72abe5ac77c.tar.gz kernel_samsung_espresso10-113b6f0df98531e4be1174c0eca8f72abe5ac77c.tar.bz2 | |
OMAP4460: OPP: update ABB for IVA OPP turbo
On 4460 all OPPs have pre-determined states for VDD_IVA's ABB LDO,
except for OPP_TURBO. OPP_TURBO may require bypass or RBB.
depending on a characterisation data blown into eFuse
register CONTROL_STD_FUSE_OPP_DPLL_1.
Bit 21 of that register signify DPLL_IVA trim OPP_TURBO might put
IVA's ABB LDO into bypass or RBB based on this value.
This patch introduces ABB type detection into the OPP init code.
Change-Id: Ie2f49652fda667943a7a9ac76d529c6a594b8755
Signed-off-by: Nishanth Menon <nm@ti.com>
| -rw-r--r-- | arch/arm/mach-omap2/opp4xxx_data.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/opp4xxx_data.c b/arch/arm/mach-omap2/opp4xxx_data.c index 7443497..325e6f9 100644 --- a/arch/arm/mach-omap2/opp4xxx_data.c +++ b/arch/arm/mach-omap2/opp4xxx_data.c @@ -39,6 +39,7 @@ */ #define OMAP4460_MPU_OPP_DPLL_TRIM BIT(18) #define OMAP4460_MPU_OPP_DPLL_TURBO_RBB BIT(20) +#define OMAP4460_IVA_OPP_DPLL_TURBO_RBB BIT(21) /* * Structures containing OMAP4430 voltage supported and various @@ -595,6 +596,23 @@ static void __init omap4460_abb_update(void) OMAP4460_VDD_MPU_OPPTURBO_UV, abb_type); pr_info("%s: MPU OPP Turbo: %s OPP ABB type\n", __func__, abb_msg); + + /* + * OMAP4460 IVA OPP Turbo configuration: + * if bit 21 is set, enable RBB + */ + rbb = reg & OMAP4460_IVA_OPP_DPLL_TURBO_RBB; + if (rbb) { + abb_type = OMAP_ABB_SLOW_OPP; + abb_msg = "Slow"; + } else { + abb_type = OMAP_ABB_NOMINAL_OPP; + abb_msg = "Nominal"; + } + omap4_abb_update(omap446x_vdd_iva_volt_data, + OMAP4460_VDD_IVA_OPPTURBO_UV, + abb_type); + pr_info("%s: IVA OPP Turbo: %s OPP ABB type\n", __func__, abb_msg); } /** |