Commit 936289f0 authored by Gabriel Fernandez's avatar Gabriel Fernandez Committed by Stephen Boyd
Browse files

clk: stm32: Introduce clocks of STM32F769 board 



STM32F769 clocks are derived from STM32746 clocks.
main differences are:
- new source clock for SAI1 and SAI2 (HSI or HSE)
- Add DFSDM & DSI clocks

Signed-off-by: default avatarGabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 9e98c678

Documentation/devicetree/bindings/clock/st,stm32-rcc.txt

+6 −0
Original line number Diff line number Diff line
@@ -11,6 +11,8 @@ Required properties: 
  "st,stm32f42xx-rcc"

  "st,stm32f469-rcc"

  "st,stm32f746-rcc"

  "st,stm32f769-rcc"



- reg: should be register base and length as documented in the

  datasheet

- #reset-cells: 1, see below
@@ -102,6 +104,10 @@ The secondary index is bound with the following magic numbers: 
	28	CLK_I2C3

	29	CLK_I2C4

	30	CLK_LPTIMER	(LPTimer1 clock)

	31	CLK_PLL_SRC

	32	CLK_DFSDM1

	33	CLK_ADFSDM1

	34	CLK_F769_DSI

)



Example:

drivers/clk/clk-stm32f4.c

+299 −8
Original line number Diff line number Diff line
@@ -300,6 +300,85 @@ static const struct stm32f4_gate_data stm32f746_gates[] __initconst = { 
	{ STM32F4_RCC_APB2ENR, 26,	"ltdc",		"apb2_div" },

};



static const struct stm32f4_gate_data stm32f769_gates[] __initconst = {

	{ STM32F4_RCC_AHB1ENR,  0,	"gpioa",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  1,	"gpiob",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  2,	"gpioc",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  3,	"gpiod",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  4,	"gpioe",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  5,	"gpiof",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  6,	"gpiog",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  7,	"gpioh",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  8,	"gpioi",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR,  9,	"gpioj",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 10,	"gpiok",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 12,	"crc",		"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 18,	"bkpsra",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 20,	"dtcmram",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 21,	"dma1",		"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 22,	"dma2",		"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 23,	"dma2d",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 25,	"ethmac",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 26,	"ethmactx",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 27,	"ethmacrx",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 28,	"ethmacptp",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 29,	"otghs",	"ahb_div" },

	{ STM32F4_RCC_AHB1ENR, 30,	"otghsulpi",	"ahb_div" },



	{ STM32F4_RCC_AHB2ENR,  0,	"dcmi",		"ahb_div" },

	{ STM32F4_RCC_AHB2ENR,  1,	"jpeg",		"ahb_div" },

	{ STM32F4_RCC_AHB2ENR,  4,	"cryp",		"ahb_div" },

	{ STM32F4_RCC_AHB2ENR,  5,	"hash",		"ahb_div" },

	{ STM32F4_RCC_AHB2ENR,  6,	"rng",		"pll48"   },

	{ STM32F4_RCC_AHB2ENR,  7,	"otgfs",	"pll48"   },



	{ STM32F4_RCC_AHB3ENR,  0,	"fmc",		"ahb_div",

		CLK_IGNORE_UNUSED },

	{ STM32F4_RCC_AHB3ENR,  1,	"qspi",		"ahb_div",

		CLK_IGNORE_UNUSED },



	{ STM32F4_RCC_APB1ENR,  0,	"tim2",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  1,	"tim3",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  2,	"tim4",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  3,	"tim5",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  4,	"tim6",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  5,	"tim7",		"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  6,	"tim12",	"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  7,	"tim13",	"apb1_mul" },

	{ STM32F4_RCC_APB1ENR,  8,	"tim14",	"apb1_mul" },

	{ STM32F4_RCC_APB1ENR, 10,	"rtcapb",	"apb1_mul" },

	{ STM32F4_RCC_APB1ENR, 11,	"wwdg",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 13,	"can3",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 14,	"spi2",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 15,	"spi3",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 16,	"spdifrx",	"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 25,	"can1",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 26,	"can2",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 27,	"cec",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 28,	"pwr",		"apb1_div" },

	{ STM32F4_RCC_APB1ENR, 29,	"dac",		"apb1_div" },



	{ STM32F4_RCC_APB2ENR,  0,	"tim1",		"apb2_mul" },

	{ STM32F4_RCC_APB2ENR,  1,	"tim8",		"apb2_mul" },

	{ STM32F4_RCC_APB2ENR,  7,	"sdmmc2",	"sdmux2" },

	{ STM32F4_RCC_APB2ENR,  8,	"adc1",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR,  9,	"adc2",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 10,	"adc3",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 11,	"sdmmc1",	"sdmux1" },

	{ STM32F4_RCC_APB2ENR, 12,	"spi1",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 13,	"spi4",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 14,	"syscfg",	"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 16,	"tim9",		"apb2_mul" },

	{ STM32F4_RCC_APB2ENR, 17,	"tim10",	"apb2_mul" },

	{ STM32F4_RCC_APB2ENR, 18,	"tim11",	"apb2_mul" },

	{ STM32F4_RCC_APB2ENR, 20,	"spi5",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 21,	"spi6",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 22,	"sai1",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 23,	"sai2",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 26,	"ltdc",		"apb2_div" },

	{ STM32F4_RCC_APB2ENR, 30,	"mdio",		"apb2_div" },

};



/*

 * This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx

 * have gate bits associated with them. Its combined hweight is 71.
@@ -318,6 +397,10 @@ static const u64 stm32f746_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull, 
						      0x0000000000000003ull,

						      0x04f77f833e01c9ffull };



static const u64 stm32f769_gate_map[MAX_GATE_MAP] = { 0x000000f37ef417ffull,

						      0x0000000000000003ull,

						      0x44F77F833E01EDFFull };



static const u64 *stm32f4_gate_map;



static struct clk_hw **clks;
@@ -1048,6 +1131,10 @@ static const char *rtc_parents[4] = { 
	"no-clock", "lse", "lsi", "hse-rtc"

};



static const char *pll_src = "pll-src";



static const char *pllsrc_parent[2] = { "hsi", NULL };



static const char *dsi_parent[2] = { NULL, "pll-r" };



static const char *lcd_parent[1] = { "pllsai-r-div" };
@@ -1072,6 +1159,9 @@ static const char *uart_parents2[4] = { "apb1_div", "sys", "hsi", "lse" }; 


static const char *i2c_parents[4] = { "apb1_div", "sys", "hsi", "no-clock" };



static const char * const dfsdm1_src[] = { "apb2_div", "sys" };

static const char * const adsfdm1_parent[] = { "sai1_clk", "sai2_clk" };



struct stm32_aux_clk {

	int idx;

	const char *name;
@@ -1313,6 +1403,177 @@ static const struct stm32_aux_clk stm32f746_aux_clk[] = { 
	},

};



static const struct stm32_aux_clk stm32f769_aux_clk[] = {

	{

		CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),

		NO_MUX, 0, 0,

		STM32F4_RCC_APB2ENR, 26,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),

		STM32F4_RCC_CFGR, 23, 1,

		NO_GATE, 0,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents),

		STM32F4_RCC_DCKCFGR, 20, 3,

		STM32F4_RCC_APB2ENR, 22,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents),

		STM32F4_RCC_DCKCFGR, 22, 3,

		STM32F4_RCC_APB2ENR, 23,

		CLK_SET_RATE_PARENT

	},

	{

		NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),

		STM32F7_RCC_DCKCFGR2, 27, 1,

		NO_GATE, 0,

		0

	},

	{

		NO_IDX, "sdmux1", sdmux_parents, ARRAY_SIZE(sdmux_parents),

		STM32F7_RCC_DCKCFGR2, 28, 1,

		NO_GATE, 0,

		0

	},

	{

		NO_IDX, "sdmux2", sdmux_parents, ARRAY_SIZE(sdmux_parents),

		STM32F7_RCC_DCKCFGR2, 29, 1,

		NO_GATE, 0,

		0

	},

	{

		CLK_HDMI_CEC, "hdmi-cec",

		hdmi_parents, ARRAY_SIZE(hdmi_parents),

		STM32F7_RCC_DCKCFGR2, 26, 1,

		NO_GATE, 0,

		0

	},

	{

		CLK_SPDIF, "spdif-rx",

		spdif_parent, ARRAY_SIZE(spdif_parent),

		STM32F7_RCC_DCKCFGR2, 22, 3,

		STM32F4_RCC_APB2ENR, 23,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_USART1, "usart1",

		uart_parents1, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 0, 3,

		STM32F4_RCC_APB2ENR, 4,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_USART2, "usart2",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 2, 3,

		STM32F4_RCC_APB1ENR, 17,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_USART3, "usart3",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 4, 3,

		STM32F4_RCC_APB1ENR, 18,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_UART4, "uart4",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 6, 3,

		STM32F4_RCC_APB1ENR, 19,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_UART5, "uart5",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 8, 3,

		STM32F4_RCC_APB1ENR, 20,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_USART6, "usart6",

		uart_parents1, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 10, 3,

		STM32F4_RCC_APB2ENR, 5,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_UART7, "uart7",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 12, 3,

		STM32F4_RCC_APB1ENR, 30,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_UART8, "uart8",

		uart_parents2, ARRAY_SIZE(uart_parents1),

		STM32F7_RCC_DCKCFGR2, 14, 3,

		STM32F4_RCC_APB1ENR, 31,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_I2C1, "i2c1",

		i2c_parents, ARRAY_SIZE(i2c_parents),

		STM32F7_RCC_DCKCFGR2, 16, 3,

		STM32F4_RCC_APB1ENR, 21,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_I2C2, "i2c2",

		i2c_parents, ARRAY_SIZE(i2c_parents),

		STM32F7_RCC_DCKCFGR2, 18, 3,

		STM32F4_RCC_APB1ENR, 22,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_I2C3, "i2c3",

		i2c_parents, ARRAY_SIZE(i2c_parents),

		STM32F7_RCC_DCKCFGR2, 20, 3,

		STM32F4_RCC_APB1ENR, 23,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_I2C4, "i2c4",

		i2c_parents, ARRAY_SIZE(i2c_parents),

		STM32F7_RCC_DCKCFGR2, 22, 3,

		STM32F4_RCC_APB1ENR, 24,

		CLK_SET_RATE_PARENT,

	},

	{

		CLK_LPTIMER, "lptim1",

		lptim_parent, ARRAY_SIZE(lptim_parent),

		STM32F7_RCC_DCKCFGR2, 24, 3,

		STM32F4_RCC_APB1ENR, 9,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_F769_DSI, "dsi",

		dsi_parent, ARRAY_SIZE(dsi_parent),

		STM32F7_RCC_DCKCFGR2, 0, 1,

		STM32F4_RCC_APB2ENR, 27,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_DFSDM1, "dfsdm1",

		dfsdm1_src, ARRAY_SIZE(dfsdm1_src),

		STM32F4_RCC_DCKCFGR, 25, 1,

		STM32F4_RCC_APB2ENR, 29,

		CLK_SET_RATE_PARENT

	},

	{

		CLK_ADFSDM1, "adfsdm1",

		adsfdm1_parent, ARRAY_SIZE(adsfdm1_parent),

		STM32F4_RCC_DCKCFGR, 26, 1,

		STM32F4_RCC_APB2ENR, 29,

		CLK_SET_RATE_PARENT

	},

};



static const struct stm32f4_clk_data stm32f429_clk_data = {

	.end_primary	= END_PRIMARY_CLK,

	.gates_data	= stm32f429_gates,
@@ -1343,6 +1604,16 @@ static const struct stm32f4_clk_data stm32f746_clk_data = { 
	.aux_clk_num	= ARRAY_SIZE(stm32f746_aux_clk),

};



static const struct stm32f4_clk_data stm32f769_clk_data = {

	.end_primary	= END_PRIMARY_CLK_F7,

	.gates_data	= stm32f769_gates,

	.gates_map	= stm32f769_gate_map,

	.gates_num	= ARRAY_SIZE(stm32f769_gates),

	.pll_data	= stm32f469_pll,

	.aux_clk	= stm32f769_aux_clk,

	.aux_clk_num	= ARRAY_SIZE(stm32f769_aux_clk),

};



static const struct of_device_id stm32f4_of_match[] = {

	{

		.compatible = "st,stm32f42xx-rcc",
@@ -1356,6 +1627,10 @@ static const struct of_device_id stm32f4_of_match[] = { 
		.compatible = "st,stm32f746-rcc",

		.data = &stm32f746_clk_data

	},

	{

		.compatible = "st,stm32f769-rcc",

		.data = &stm32f769_clk_data

	},

	{}

};
@@ -1427,9 +1702,8 @@ static void __init stm32f4_rcc_init(struct device_node *np) 
	int n;

	const struct of_device_id *match;

	const struct stm32f4_clk_data *data;

	unsigned long pllcfgr;

	const char *pllsrc;

	unsigned long pllm;

	struct clk_hw *pll_src_hw;



	base = of_iomap(np, 0);

	if (!base) {
@@ -1460,20 +1734,32 @@ static void __init stm32f4_rcc_init(struct device_node *np) 


	hse_clk = of_clk_get_parent_name(np, 0);

	dsi_parent[0] = hse_clk;

	pllsrc_parent[1] = hse_clk;



	i2s_in_clk = of_clk_get_parent_name(np, 1);



	i2s_parents[1] = i2s_in_clk;

	sai_parents[2] = i2s_in_clk;



	if (of_device_is_compatible(np, "st,stm32f769-rcc")) {

		clk_hw_register_gate(NULL, "dfsdm1_apb", "apb2_div", 0,

				     base + STM32F4_RCC_APB2ENR, 29,

				     CLK_IGNORE_UNUSED, &stm32f4_clk_lock);

		dsi_parent[0] = pll_src;

		sai_parents[3] = pll_src;

	}



	clks[CLK_HSI] = clk_hw_register_fixed_rate_with_accuracy(NULL, "hsi",

			NULL, 0, 16000000, 160000);



	pllcfgr = readl(base + STM32F4_RCC_PLLCFGR);

	pllsrc = pllcfgr & BIT(22) ? hse_clk : "hsi";

	pllm = pllcfgr & 0x3f;

	pll_src_hw = clk_hw_register_mux(NULL, pll_src, pllsrc_parent,

					 ARRAY_SIZE(pllsrc_parent), 0,

					 base + STM32F4_RCC_PLLCFGR, 22, 1, 0,

					 &stm32f4_clk_lock);



	pllm = readl(base + STM32F4_RCC_PLLCFGR) & 0x3f;



	clk_hw_register_fixed_factor(NULL, "vco_in", pllsrc,

	clk_hw_register_fixed_factor(NULL, "vco_in", pll_src,

				     0, 1, pllm);



	stm32f4_rcc_register_pll("vco_in", &data->pll_data[0],
@@ -1612,12 +1898,16 @@ static void __init stm32f4_rcc_init(struct device_node *np) 
			clks[aux_clk->idx] = hw;

	}



	if (of_device_is_compatible(np, "st,stm32f746-rcc"))

	if (of_device_is_compatible(np, "st,stm32f746-rcc")) {



		clk_hw_register_fixed_factor(NULL, "hsi_div488", "hsi", 0,

				1, 488);



		clks[CLK_PLL_SRC] = pll_src_hw;

	}



	of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL);



	return;

fail:

	kfree(clks);
@@ -1626,3 +1916,4 @@ fail: 
CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init);

CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init);

CLK_OF_DECLARE_DRIVER(stm32f746_rcc, "st,stm32f746-rcc", stm32f4_rcc_init);

CLK_OF_DECLARE_DRIVER(stm32f769_rcc, "st,stm32f769-rcc", stm32f4_rcc_init);

include/dt-bindings/clock/stm32fx-clock.h

+5 −2
Original line number Diff line number Diff line
@@ -54,7 +54,10 @@ 
#define CLK_I2C3		28

#define CLK_I2C4		29

#define CLK_LPTIMER		30



#define END_PRIMARY_CLK_F7	31

#define CLK_PLL_SRC		31

#define CLK_DFSDM1		32

#define CLK_ADFSDM1		33

#define CLK_F769_DSI		34

#define END_PRIMARY_CLK_F7	35



#endif

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