[PATCH v3 2/2] doc: dt: add documentation for lpc1850-rgu reset driver
From: Joachim Eastwood <hidden>
Date: 2015-05-05 22:10:27
Also in:
linux-devicetree
Subsystem:
open firmware and flattened device tree bindings, reset controller framework, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Philipp Zabel, Linus Torvalds
Add device tree binding documentation for the Reset Generation Unit (RGU) found on NXP LPC18xx and LPC43xx devies. This documentation also includes a table which shows the RGU reset number and the connected peripheral. Signed-off-by: Joachim Eastwood <redacted> --- .../devicetree/bindings/reset/nxp,lpc1850-rgu.txt | 84 ++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/nxp,lpc1850-rgu.txt
diff --git a/Documentation/devicetree/bindings/reset/nxp,lpc1850-rgu.txt b/Documentation/devicetree/bindings/reset/nxp,lpc1850-rgu.txt
new file mode 100644
index 000000000000..b4e96a278445
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/nxp,lpc1850-rgu.txt@@ -0,0 +1,84 @@ +NXP LPC1850 Reset Generation Unit (RGU) +======================================== + +Please also refer to reset.txt in this directory for common reset +controller binding usage. + +Required properties: +- compatible: Should be "nxp,lpc1850-rgu" +- reg: register base and length +- clocks: phandle and clock specifier to RGU clocks +- clock-names: should contain "delay" and "reg" +- #reset-cells: should be 1 + +See table below for valid peripheral reset numbers. Numbers not +in the table below are either reserved or not applicable for +normal operation. + +Reset Peripheral + 9 System control unit (SCU) + 12 ARM Cortex-M0 subsystem core (LPC43xx only) + 13 CPU core + 16 LCD controller + 17 USB0 + 18 USB1 + 19 DMA + 20 SDIO + 21 External memory controller (EMC) + 22 Ethernet + 25 Flash bank A + 27 EEPROM + 28 GPIO + 29 Flash bank B + 32 Timer0 + 33 Timer1 + 34 Timer2 + 35 Timer3 + 36 Repetitive Interrupt timer (RIT) + 37 State Configurable Timer (SCT) + 38 Motor control PWM (MCPWM) + 39 QEI + 40 ADC0 + 41 ADC1 + 42 DAC + 44 USART0 + 45 UART1 + 46 USART2 + 47 USART3 + 48 I2C0 + 49 I2C1 + 50 SSP0 + 51 SSP1 + 52 I2S0 and I2S1 + 53 Serial Flash Interface (SPIFI) + 54 C_CAN1 + 55 C_CAN0 + 56 ARM Cortex-M0 application core (LPC4370 only) + 57 SGPIO (LPC43xx only) + 58 SPI (LPC43xx only) + 60 ADCHS (12-bit ADC) (LPC4370 only) + +Refer to NXP LPC18xx or LPC43xx user manual for more details about +the reset signals and the connected block/peripheral. + +Reset provider example: +rgu: reset-controller at 40053000 { + compatible = "nxp,lpc1850-rgu"; + reg = <0x40053000 0x1000>; + clocks = <&cgu BASE_SAFE_CLK>, <&ccu1 CLK_CPU_BUS>; + clock-names = "delay", "reg"; + #reset-cells = <1>; +}; + +Reset consumer example: +mac: ethernet at 40010000 { + compatible = "nxp,lpc1850-dwmac", "snps,dwmac-3.611", "snps,dwmac"; + reg = <0x40010000 0x2000>; + interrupts = <5>; + interrupt-names = "macirq"; + clocks = <&ccu1 CLK_CPU_ETHERNET>; + clock-names = "stmmaceth"; + resets = <&rgu 22>; + reset-names = "stmmaceth"; + status = "disabled"; +};
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1.8.0