[PATCH v3 1/3] AM35x: voltage: Basic initialization

Abhilash K V
2011-09-22T13:29:13Z

This patch adds the basic initialization of voltage layer
for AM35x. Since AM35x doesn't support voltage scaling,
Many functions have been defined to plug into existing
voltage layer.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
---
arch/arm/mach-omap2/omap_opp_data.h | 1 +
arch/arm/mach-omap2/opp3xxx_data.c | 9 +++++++++
arch/arm/mach-omap2/voltagedomains3xxx_data.c | 10 ++++++++--
3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_opp_data.h b/arch/arm/mach-omap2/omap_opp_data.h
index c784c12..c7cedf3 100644
--- a/arch/arm/mach-omap2/omap_opp_data.h
+++ b/arch/arm/mach-omap2/omap_opp_data.h
@@ -88,6 +88,7 @@ extern struct omap_volt_data omap34xx_vddmpu_volt_data[];
extern struct omap_volt_data omap34xx_vddcore_volt_data[];
extern struct omap_volt_data omap36xx_vddmpu_volt_data[];
extern struct omap_volt_data omap36xx_vddcore_volt_data[];
+extern struct omap_volt_data am35xx_vdd_volt_data[];

extern struct omap_volt_data omap44xx_vdd_mpu_volt_data[];
extern struct omap_volt_data omap44xx_vdd_iva_volt_data[];
diff --git a/arch/arm/mach-omap2/opp3xxx_data.c b/arch/arm/mach-omap2/opp3xxx_data.c
index d95f3f9..e4a5ee6 100644
--- a/arch/arm/mach-omap2/opp3xxx_data.c
+++ b/arch/arm/mach-omap2/opp3xxx_data.c
@@ -85,6 +85,15 @@ struct omap_volt_data omap36xx_vddcore_volt_data[] = {
VOLT_DATA_DEFINE(0, 0, 0, 0),
};

+/* AM35x
+ *
+ * Fields related to SmartReflex and Voltage Processor are set to 0.
+ */
+struct omap_volt_data am35xx_vdd_volt_data[] = {
+ VOLT_DATA_DEFINE(OMAP3430_VDD_MPU_OPP3_UV, 0x0, 0x0, 0x0),
+ VOLT_DATA_DEFINE(0, 0, 0, 0),
+};
+
/* OPP data */

static struct omap_opp_def __initdata omap34xx_opp_def_list[] = {
diff --git a/arch/arm/mach-omap2/voltagedomains3xxx_data.c b/arch/arm/mach-omap2/voltagedomains3xxx_data.c
index 071101d..530082f 100644
--- a/arch/arm/mach-omap2/voltagedomains3xxx_data.c
+++ b/arch/arm/mach-omap2/voltagedomains3xxx_data.c
@@ -85,7 +85,10 @@ void __init omap3xxx_voltagedomains_init(void)
* XXX Will depend on the process, validation, and binning
* for the currently-running IC
*/
- if (cpu_is_omap3630()) {
+ if (cpu_is_omap3505() || cpu_is_omap3517()) {
+ omap3_voltdm_mpu.volt_data = am35xx_vdd_volt_data;
+ omap3_voltdm_core.volt_data = am35xx_vdd_volt_data;
+ } else if (cpu_is_omap3630()) {
omap3_voltdm_mpu.volt_data = omap36xx_vddmpu_volt_data;
omap3_voltdm_core.volt_data = omap36xx_vddcore_volt_data;
} else {
@@ -93,8 +96,11 @@ void __init omap3xxx_voltagedomains_init(void)
omap3_voltdm_core.volt_data = omap34xx_vddcore_volt_data;
}

- for (i = 0; voltdm = voltagedomains_omap3[i], voltdm; i++)
+ for (i = 0; voltdm = voltagedomains_omap3[i], voltdm; i++) {
+ if (cpu_is_omap3505() || cpu_is_omap3517())
+ voltdm->scalable = false;
voltdm->sys_clk.name = sys_clk_name;
+ }

voltdm_init(voltagedomains_omap3);
};
--
1.7.1