Commit bae71de5 authored by Georgi Vlaev's avatar Georgi Vlaev Committed by Stephen Boyd
Browse files

clk: keystone: syscon-clk: Add support for AM62 epwm-tbclk 

AM62 has 3 instances of EPWM modules. Each EPWM module has
an EPWM TBCLKEN module input used to individually enable or
disable its EPWM time-base clock. The EPWM time-base clock
enable input comes from the CTRLMMR_EPWM_TB_CLKEN register
bits 0 to 2 in CTRL_MMR0 module (6.1.1.4.1.48 [1]). This
is virtually the same setup as in AM64 but with 3 instead
of 9 clock providers on AM62.

Update the driver with the 3 instances of clocks associated
to a new compatible: "ti,am62-epwm-tbclk".

[1] https://www.ti.com/lit/pdf/spruiv7



Signed-off-by: default avatarGeorgi Vlaev <g-vlaev@ti.com>
Tested-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20220415190343.6284-3-g-vlaev@ti.com


Reviewed-by: default avatarNishanth Menon <nm@ti.com>
Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 4ce2b909

drivers/clk/keystone/syscon-clk.c

+11 −0
Original line number Diff line number Diff line
@@ -162,6 +162,13 @@ static const struct ti_syscon_gate_clk_data am64_clk_data[] = { 
	{ /* Sentinel */ },

};



static const struct ti_syscon_gate_clk_data am62_clk_data[] = {

	TI_SYSCON_CLK_GATE("epwm_tbclk0", 0x0, 0),

	TI_SYSCON_CLK_GATE("epwm_tbclk1", 0x0, 1),

	TI_SYSCON_CLK_GATE("epwm_tbclk2", 0x0, 2),

	{ /* Sentinel */ },

};



static const struct of_device_id ti_syscon_gate_clk_ids[] = {

	{

		.compatible = "ti,am654-ehrpwm-tbclk",
@@ -171,6 +178,10 @@ static const struct of_device_id ti_syscon_gate_clk_ids[] = { 
		.compatible = "ti,am64-epwm-tbclk",

		.data = &am64_clk_data,

	},

	{

		.compatible = "ti,am62-epwm-tbclk",

		.data = &am62_clk_data,

	},

	{ }

};

MODULE_DEVICE_TABLE(of, ti_syscon_gate_clk_ids);