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-rw-r--r--Documentation/devicetree/bindings/clock/st,stm32-rcc.txt17
-rw-r--r--include/dt-bindings/clock/stm32fx-clock.h39
2 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
index 0532d815dae3..8f19d87cbf24 100644
--- a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
+++ b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
@@ -17,6 +17,9 @@ Required properties:
17 property, containing a phandle to the clock device node, an index selecting 17 property, containing a phandle to the clock device node, an index selecting
18 between gated clocks and other clocks and an index specifying the clock to 18 between gated clocks and other clocks and an index specifying the clock to
19 use. 19 use.
20- clocks: External oscillator clock phandle
21 - high speed external clock signal (HSE)
22 - external I2S clock (I2S_CKIN)
20 23
21Example: 24Example:
22 25
@@ -25,6 +28,7 @@ Example:
25 #clock-cells = <2> 28 #clock-cells = <2>
26 compatible = "st,stm32f42xx-rcc", "st,stm32-rcc"; 29 compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
27 reg = <0x40023800 0x400>; 30 reg = <0x40023800 0x400>;
31 clocks = <&clk_hse>, <&clk_i2s_ckin>;
28 }; 32 };
29 33
30Specifying gated clocks 34Specifying gated clocks
@@ -66,6 +70,19 @@ The secondary index is bound with the following magic numbers:
66 70
67 0 SYSTICK 71 0 SYSTICK
68 1 FCLK 72 1 FCLK
73 2 CLK_LSI (low-power clock source)
74 3 CLK_LSE (generated from a 32.768 kHz low-speed external
75 crystal or ceramic resonator)
76 4 CLK_HSE_RTC (HSE division factor for RTC clock)
77 5 CLK_RTC (real-time clock)
78 6 PLL_VCO_I2S (vco frequency of I2S pll)
79 7 PLL_VCO_SAI (vco frequency of SAI pll)
80 8 CLK_LCD (LCD-TFT)
81 9 CLK_I2S (I2S clocks)
82 10 CLK_SAI1 (audio clocks)
83 11 CLK_SAI2
84 12 CLK_I2SQ_PDIV (post divisor of pll i2s q divisor)
85 13 CLK_SAIQ_PDIV (post divisor of pll sai q divisor)
69 86
70Example: 87Example:
71 88
diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h
new file mode 100644
index 000000000000..08bcab61b714
--- /dev/null
+++ b/include/dt-bindings/clock/stm32fx-clock.h
@@ -0,0 +1,39 @@
1/*
2 * stm32fx-clock.h
3 *
4 * Copyright (C) 2016 STMicroelectronics
5 * Author: Gabriel Fernandez for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
7 */
8
9/*
10 * List of clocks wich are not derived from system clock (SYSCLOCK)
11 *
12 * The index of these clocks is the secondary index of DT bindings
13 * (see Documentatoin/devicetree/bindings/clock/st,stm32-rcc.txt)
14 *
15 * e.g:
16 <assigned-clocks = <&rcc 1 CLK_LSE>;
17*/
18
19#ifndef _DT_BINDINGS_CLK_STMFX_H
20#define _DT_BINDINGS_CLK_STMFX_H
21
22#define SYSTICK 0
23#define FCLK 1
24#define CLK_LSI 2
25#define CLK_LSE 3
26#define CLK_HSE_RTC 4
27#define CLK_RTC 5
28#define PLL_VCO_I2S 6
29#define PLL_VCO_SAI 7
30#define CLK_LCD 8
31#define CLK_I2S 9
32#define CLK_SAI1 10
33#define CLK_SAI2 11
34#define CLK_I2SQ_PDIV 12
35#define CLK_SAIQ_PDIV 13
36
37#define END_PRIMARY_CLK 14
38
39#endif