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-rw-r--r--Documentation/devicetree/bindings/clock/st,stm32-rcc.txt37
1 files changed, 37 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..b240121d2ac9 100644
--- a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
+++ b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
@@ -10,6 +10,7 @@ Required properties:
- compatible: Should be:
"st,stm32f42xx-rcc"
"st,stm32f469-rcc"
+ "st,stm32f746-rcc"
- reg: should be register base and length as documented in the
datasheet
- #reset-cells: 1, see below
@@ -17,6 +18,9 @@ Required properties:
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
use.
+- clocks: External oscillator clock phandle
+ - high speed external clock signal (HSE)
+ - external I2S clock (I2S_CKIN)
Example:
@@ -25,6 +29,7 @@ Example:
#clock-cells = <2>
compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
reg = <0x40023800 0x400>;
+ clocks = <&clk_hse>, <&clk_i2s_ckin>;
};
Specifying gated clocks
@@ -66,6 +71,38 @@ The secondary index is bound with the following magic numbers:
0 SYSTICK
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)
+
+ 14 CLK_HSI (Internal ocscillator clock)
+ 15 CLK_SYSCLK (System Clock)
+ 16 CLK_HDMI_CEC (HDMI-CEC clock)
+ 17 CLK_SPDIF (SPDIF-Rx clock)
+ 18 CLK_USART1 (U(s)arts clocks)
+ 19 CLK_USART2
+ 20 CLK_USART3
+ 21 CLK_UART4
+ 22 CLK_UART5
+ 23 CLK_USART6
+ 24 CLK_UART7
+ 25 CLK_UART8
+ 26 CLK_I2C1 (I2S clocks)
+ 27 CLK_I2C2
+ 28 CLK_I2C3
+ 29 CLK_I2C4
+ 30 CLK_LPTIMER (LPTimer1 clock)
+)
Example: