From: Bryan Brattlof bb@ti.com

In order for the Cortex-A72s to operate at different frequencies other than the default 2GHz, add in a new 'virtual' mux (a mux that does not physically exist in the clock tree) that can be selected.

CC: Vishal Mahaveer vishalm@ti.com Signed-off-by: Bryan Brattlof bb@ti.com Signed-off-by: Apurva Nandan a-nandan@ti.com Signed-off-by: Reid Tonking reidt@ti.com --- arch/arm/mach-k3/j7200/clk-data.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/j7200/clk-data.c b/arch/arm/mach-k3/j7200/clk-data.c index 9b45786a2d4..eb8436decbd 100644 --- a/arch/arm/mach-k3/j7200/clk-data.c +++ b/arch/arm/mach-k3/j7200/clk-data.c @@ -141,6 +141,11 @@ static const char * const k3_pll_ctrl_wrap_main_0_sysclkout_clk_parents[] = { "hsdiv4_16fft_main_0_hsdivout0_clk", };

+static const char * const main_pll8_sel_extwave_out0_parents[] = { + "pllfracf_ssmod_16fft_main_8_foutvcop_clk", + "hsdiv0_16fft_main_8_hsdivout0_clk", +}; + static const char * const mcu_obsclk_outmux_out0_parents[] = { "mcu_obsclk_div_out0", "gluelogic_hfosc0_clkout", @@ -396,6 +401,7 @@ static const struct clk_data clk_list[] = { CLK_DIV("hsdiv4_16fft_main_3_hsdivout2_clk", "pllfracf_ssmod_16fft_main_3_foutvcop_clk", 0x683088, 0, 7, 0, 0), CLK_MUX_PLLCTRL("k3_pll_ctrl_wrap_main_0_sysclkout_clk", k3_pll_ctrl_wrap_main_0_sysclkout_clk_parents, 2, 0x410000, 0), CLK_DIV("k3_pll_ctrl_wrap_main_0_chip_div1_clk_clk", "k3_pll_ctrl_wrap_main_0_sysclkout_clk", 0x410118, 0, 5, 0, 0), + CLK_MUX("main_pll8_sel_extwave_out0", main_pll8_sel_extwave_out0_parents, 2, 0x688040, 0, 1, 0), CLK_DIV("mcu_obsclk_div_out0", "wkup_obsclk_mux_out0", 0x43008000, 8, 4, 0, 0), CLK_MUX("mcu_obsclk_outmux_out0", mcu_obsclk_outmux_out0_parents, 2, 0x43008000, 24, 1, 0), CLK_PLL("pllfracf_ssmod_16fft_main_4_foutvcop_clk", "main_pll4_xref_sel_out0", 0x684000, 0), @@ -545,11 +551,14 @@ static const struct dev_clk soc_dev_clk_data[] = { DEV_CLK(288, 14, "board_0_hfosc1_clk_out"), DEV_CLK(288, 15, "k3_pll_ctrl_wrap_main_0_chip_div1_clk_clk"), DEV_CLK(288, 17, "k3_pll_ctrl_wrap_main_0_chip_div1_clk_clk"), + DEV_CLK(323, 0, "main_pll8_sel_extwave_out0"), + DEV_CLK(323, 1, "pllfracf_ssmod_16fft_main_8_foutvcop_clk"), + DEV_CLK(323, 2, "hsdiv0_16fft_main_8_hsdivout0_clk"), };

const struct ti_k3_clk_platdata j7200_clk_platdata = { .clk_list = clk_list, - .clk_list_cnt = 109, + .clk_list_cnt = ARRAY_SIZE(clk_list), .soc_dev_clk_data = soc_dev_clk_data, - .soc_dev_clk_data_cnt = 129, + .soc_dev_clk_data_cnt = ARRAY_SIZE(soc_dev_clk_data), };

Previously, dynamic frequency scaling supported rates only through fixed divison.

This virtual clock mux configuration enables more varied rates on A72 clock ID 202 by setting up the required register.

Reviewed-by: Udit Kumar u-kumar1@ti.com Signed-off-by: Apurva Nandan a-nandan@ti.com Signed-off-by: Reid Tonking reidt@ti.com --- arch/arm/dts/k3-j7200-r5-common-proc-board.dts | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/k3-j7200-r5-common-proc-board.dts b/arch/arm/dts/k3-j7200-r5-common-proc-board.dts index f0a73605020..018faaa13b6 100644 --- a/arch/arm/dts/k3-j7200-r5-common-proc-board.dts +++ b/arch/arm/dts/k3-j7200-r5-common-proc-board.dts @@ -24,7 +24,8 @@ <&k3_pds 4 TI_SCI_PD_EXCLUSIVE>; resets = <&k3_reset 202 0>; clocks = <&k3_clks 61 1>; - assigned-clocks = <&k3_clks 202 2>, <&k3_clks 61 1>; + assigned-clocks = <&k3_clks 202 2>, <&k3_clks 61 1>, <&k3_clks 323 0>; + assigned-clock-parents= <0>, <0>, <&k3_clks 323 2>; assigned-clock-rates = <2000000000>, <200000000>; ti,sci = <&dmsc>; ti,sci-proc-id = <32>;