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Commit 232aa35e authored by Alexandre TORGUE's avatar Alexandre TORGUE
Browse files

Merge commit 'f8b50363' into stm32-dt-for-v4.11

parents 7ce7d89f f8b50363

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

+17 −0
Original line number Original line Diff line number Diff line
@@ -17,6 +17,9 @@ Required properties: 
  property, containing a phandle to the clock device node, an index selecting

  property, containing a phandle to the clock device node, an index selecting

  between gated clocks and other clocks and an index specifying the clock to

  between gated clocks and other clocks and an index specifying the clock to

  use.

  use.

- clocks: External oscillator clock phandle

  - high speed external clock signal (HSE)

  - external I2S clock (I2S_CKIN)





Example:

Example:
@@ -25,6 +28,7 @@ Example: 
		#clock-cells = <2>

		#clock-cells = <2>

		compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";

		compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";

		reg = <0x40023800 0x400>;

		reg = <0x40023800 0x400>;

		clocks = <&clk_hse>, <&clk_i2s_ckin>;

	};

	};





Specifying gated clocks

Specifying gated clocks
@@ -66,6 +70,19 @@ The secondary index is bound with the following magic numbers: 




	0	SYSTICK

	0	SYSTICK

	1	FCLK

	1	FCLK

	2	CLK_LSI		(low-power clock source)

	3	CLK_LSE		(generated from a 32.768 kHz low-speed external

				 crystal or ceramic resonator)

	4	CLK_HSE_RTC	(HSE division factor for RTC clock)

	5	CLK_RTC		(real-time clock)

	6	PLL_VCO_I2S	(vco frequency of I2S pll)

	7	PLL_VCO_SAI	(vco frequency of SAI pll)

	8	CLK_LCD		(LCD-TFT)

	9	CLK_I2S		(I2S clocks)

	10	CLK_SAI1	(audio clocks)

	11	CLK_SAI2

	12	CLK_I2SQ_PDIV	(post divisor of pll i2s q divisor)

	13	CLK_SAIQ_PDIV	(post divisor of pll sai q divisor)





Example:

Example:

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

0 → 100644
+39 −0
Original line number Original line Diff line number Diff line 
/*

 * stm32fx-clock.h

 *

 * Copyright (C) 2016 STMicroelectronics

 * Author: Gabriel Fernandez for STMicroelectronics.

 * License terms:  GNU General Public License (GPL), version 2

 */



/*

 * List of clocks wich are not derived from system clock (SYSCLOCK)

 *

 * The index of these clocks is the secondary index of DT bindings

 * (see Documentatoin/devicetree/bindings/clock/st,stm32-rcc.txt)

 *

 * e.g:

	<assigned-clocks = <&rcc 1 CLK_LSE>;

*/



#ifndef _DT_BINDINGS_CLK_STMFX_H

#define _DT_BINDINGS_CLK_STMFX_H



#define SYSTICK			0

#define FCLK			1

#define CLK_LSI			2

#define CLK_LSE			3

#define CLK_HSE_RTC		4

#define CLK_RTC			5

#define PLL_VCO_I2S		6

#define PLL_VCO_SAI		7

#define CLK_LCD			8

#define CLK_I2S			9

#define CLK_SAI1		10

#define CLK_SAI2		11

#define CLK_I2SQ_PDIV		12

#define CLK_SAIQ_PDIV		13



#define END_PRIMARY_CLK		14



#endif