DRA712: Linux Frequency settings

MPU

600

This was already taken care in previous e2e - https://e2e.ti.com/support/processors/f/791/p/914335/3381373#3381373

DSP

400

1) Make sure CONFIG_DRA7_DSPEVE_OPP_NOM is enabled and CONFIG_DRA7_DSPEVE_OPP_HIGH is disabled in u-boot config

2) Make the below changes in u-boot code and try

diff --git a/arch/arm/mach-omap2/omap5/fdt.c b/arch/arm/mach-omap2/omap5/fdt.c
index 96d488f43f..2a8fc84c68 100644
--- a/arch/arm/mach-omap2/omap5/fdt.c
+++ b/arch/arm/mach-omap2/omap5/fdt.c
@@ -183,7 +183,7 @@ u32 dra76_opp_dsp_clk_rates[NUM_OPPS][OPP_DSP_CLK_NUM] = {
 /* DSPEVE voltage domain */
 u32 dra7_opp_dsp_clk_rates[NUM_OPPS][OPP_DSP_CLK_NUM] = {
        {}, /*OPP_LOW */
-       {600000000, 600000000, 400000000}, /* OPP_NOM */
+       {400000000, 400000000, 266666667}, /* OPP_NOM */
        {700000000, 700000000, 466666667}, /* OPP_OD */
        {750000000, 750000000, 500000000}, /* OPP_HIGH */
        {}, /* OPP_PLUS */

IPU

212.8

This is the default.

IVA

532

For this make sure CONFIG_DRA7_IVA_OPP_HIGH is enabled in u-boot config.

GPU

212.8

1) Make sure CONFIG_DRA7_GPU_OPP_NOM is enabled and other CONFIG_DRA7_GPU_OPP_OD is disabled in u-boot config.

2) Make the below changes in u-boot code and try

diff --git a/arch/arm/mach-omap2/omap5/fdt.c b/arch/arm/mach-omap2/omap5/fdt.c
index 96d488f43f..28c387adb7 100644
--- a/arch/arm/mach-omap2/omap5/fdt.c
+++ b/arch/arm/mach-omap2/omap5/fdt.c
@@ -201,7 +201,7 @@ u32 dra7_opp_iva_clk_rates[NUM_OPPS][OPP_IVA_CLK_NUM] = {
 /* GPU voltage domain */
 u32 dra7_opp_gpu_clk_rates[NUM_OPPS][OPP_GPU_CLK_NUM] = {
        {}, /* OPP_LOW */
-       {1277000000, 425666667}, /* OPP_NOM */
+       {638500000, 212833333}, /* OPP_NOM */
        {1000000000, 500000000}, /* OPP_OD */
        {1064000000, 532000000}, /* OPP_HIGH */
        {1330000000, 665000000}, /* OPP_PLUS */

L3

266

 This is the default

DDR3 / DDR3L

532 (DDR-1066)

Make the below changes to u-boot code and test

diff --git a/arch/arm/mach-omap2/omap5/hw_data.c b/arch/arm/mach-omap2/omap5/hw_data.c
index e6bdcb44c6..7eff08c268 100644
--- a/arch/arm/mach-omap2/omap5/hw_data.c
+++ b/arch/arm/mach-omap2/omap5/hw_data.c
@@ -272,7 +272,7 @@ struct dplls dra72x_dplls = {
        .abe = abe_dpll_params_sysclk2_361267khz,
        .iva = iva_dpll_params_2330mhz_dra7xx,
        .usb = usb_dpll_params_1920mhz,
-       .ddr =  ddr_dpll_params_2664mhz,
+       .ddr =  ddr_dpll_params_2128mhz,
        .gmac = gmac_dpll_params_2000mhz,
 };