/**
* scale_vcore_omap4460() - Scale for OMAP4460
* @rev: OMAP chip revision
*
* PMIC assumed to be used is TWL6030 + TPS62361
*/
static void scale_vcore_omap4460(unsigned int rev)
{
u32 volt;
/* vdd_core - TWL6030 VCORE 1 - OPP100 - 1.127V */
omap_vc_bypass_send_value(TWL6030_SRI2C_SLAVE_ADDR,
TWL6030_SRI2C_REG_ADDR_VCORE1, 0x22);
/* WKUP clocks */
set_modify(CM_WKUP_GPIO1_CLKCTRL, 0x00000000, 0x1);
check_loop(BIT17|BIT16, 0, CM_WKUP_GPIO1_CLKCTRL);
/* vdd_mpu - TPS62361 - OPP100 - 1.210V (roundup from 1.2V) */
volt = 1210;
volt -= TPS62361_BASE_VOLT_MV;
volt /= 10;
do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt);
/* vdd_iva - TWL6030 VCORE 2 - OPP50 - 0.950V */
omap_vc_bypass_send_value(TWL6030_SRI2C_SLAVE_ADDR,
TWL6030_SRI2C_REG_ADDR_VCORE2, 0x14);
}
/*
* Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
* We set the maximum voltages allowed here because Smart-Reflex is not
* enabled in bootloader. Voltage initialization in the kernel will set
* these to the nominal values after enabling Smart-Reflex
*/
static void scale_vcores(void)
{
u32 volt, sys_clk_khz, cycles_hi, cycles_low, temp, omap4_rev;
sys_clk_khz = get_sys_clk_freq() / 1000;
/*
* Setup the dedicated I2C controller for Voltage Control
* I2C clk - high period 40% low period 60%
*/
cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
/* values to be set in register - less by 5 & 7 respectively */
cycles_hi -= 5;
cycles_low -= 7;
temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) |
(cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT);
writel(temp, &prcm->prm_vc_cfg_i2c_clk);
/* Disable high speed mode and all advanced features */
writel(0x0, &prcm->prm_vc_cfg_i2c_mode);
omap4_rev = omap_revision();
/* TPS - supplies vdd_mpu on 4460 */
if (omap4_rev >= OMAP4460_ES1_0) {
volt = 1430;
do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt);
}
/*
* VCORE 1
*
* 4430 : supplies vdd_mpu
* Setting a high voltage for Nitro mode as smart reflex is not enabled.
* We use the maximum possible value in the AVS range because the next
* higher voltage in the discrete range (code >= 0b111010) is way too
* high
*
* 4460 : supplies vdd_core
*/
if (omap4_rev < OMAP4460_ES1_0) {
volt = 1417;
do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
} else {
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
}
/* VCORE 2 - supplies vdd_iva */
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
/*
* VCORE 3
* 4430 : supplies vdd_core
* 4460 : not connected
*/
if (omap4_rev < OMAP4460_ES1_0) {
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
}
}
