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Message-ID: <1432480307-23789-25-git-send-email-paul.burton@imgtec.com>
Date: Sun, 24 May 2015 16:11:34 +0100
From: Paul Burton <paul.burton@...tec.com>
To: <linux-mips@...ux-mips.org>
CC: Paul Burton <paul.burton@...tec.com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Mark Rutland <mark.rutland@....com>,
Mike Turquette <mturquette@...aro.org>,
Pawel Moll <pawel.moll@....com>,
Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v5 24/37] devicetree: add Ingenic CGU binding documentation
Document the devicetree binding for Ingenic SoC CGUs, and add headers
defining the clock specifiers for clocks provided by the JZ4740 & JZ4780
CGU blocks.
Signed-off-by: Paul Burton <paul.burton@...tec.com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Mike Turquette <mturquette@...aro.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: devicetree@...r.kernel.org
---
Changes in v5: None
Changes in v4:
- s/TCU/CGU/
Changes in v3:
- Merge binding documentation for various Ingenic SoCs which differ only
by compatible strings.
Changes in v2: None
.../devicetree/bindings/clock/ingenic,cgu.txt | 53 +++++++++++++
include/dt-bindings/clock/jz4740-cgu.h | 37 +++++++++
include/dt-bindings/clock/jz4780-cgu.h | 88 ++++++++++++++++++++++
3 files changed, 178 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/ingenic,cgu.txt
create mode 100644 include/dt-bindings/clock/jz4740-cgu.h
create mode 100644 include/dt-bindings/clock/jz4780-cgu.h
diff --git a/Documentation/devicetree/bindings/clock/ingenic,cgu.txt b/Documentation/devicetree/bindings/clock/ingenic,cgu.txt
new file mode 100644
index 0000000..f8d4134
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ingenic,cgu.txt
@@ -0,0 +1,53 @@
+Ingenic SoC CGU binding
+
+The CGU in an Ingenic SoC provides all the clocks generated on-chip. It
+typically includes a variety of PLLs, multiplexers, dividers & gates in order
+to provide many different clock signals derived from only 2 external source
+clocks.
+
+Required properties:
+- compatible : Should be "ingenic,<soctype>-cgu".
+ For example "ingenic,jz4740-cgu" or "ingenic,jz4780-cgu".
+- reg : The address & length of the CGU registers.
+- clocks : List of phandle & clock specifiers for clocks external to the CGU.
+ Two such external clocks should be specified - first the external crystal
+ "ext" and second the RTC clock source "rtc".
+- clock-names : List of name strings for the external clocks.
+- #clock-cells: Should be 1.
+ Clock consumers specify this argument to identify a clock. The valid values
+ may be found in <dt-bindings/clock/<soctype>-cgu.h>.
+
+Example SoC include file:
+
+/ {
+ cgu: jz4740-cgu {
+ compatible = "ingenic,jz4740-cgu";
+ reg = <0x10000000 0x100>;
+ #clock-cells = <1>;
+ };
+
+ uart0: serial@...30000 {
+ clocks = <&cgu JZ4740_CLK_UART0>;
+ };
+};
+
+Example board file:
+
+/ {
+ ext: clock@0 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <12000000>;
+ };
+
+ rtc: clock@1 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+
+ &cgu {
+ clocks = <&ext> <&rtc>;
+ clock-names: "ext", "rtc";
+ };
+};
diff --git a/include/dt-bindings/clock/jz4740-cgu.h b/include/dt-bindings/clock/jz4740-cgu.h
new file mode 100644
index 0000000..43153d3
--- /dev/null
+++ b/include/dt-bindings/clock/jz4740-cgu.h
@@ -0,0 +1,37 @@
+/*
+ * This header provides clock numbers for the ingenic,jz4740-cgu DT binding.
+ *
+ * They are roughly ordered as:
+ * - external clocks
+ * - PLLs
+ * - muxes/dividers in the order they appear in the jz4740 programmers manual
+ * - gates in order of their bit in the CLKGR* registers
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_JZ4740_CGU_H__
+#define __DT_BINDINGS_CLOCK_JZ4740_CGU_H__
+
+#define JZ4740_CLK_EXT 0
+#define JZ4740_CLK_RTC 1
+#define JZ4740_CLK_PLL 2
+#define JZ4740_CLK_PLL_HALF 3
+#define JZ4740_CLK_CCLK 4
+#define JZ4740_CLK_HCLK 5
+#define JZ4740_CLK_PCLK 6
+#define JZ4740_CLK_MCLK 7
+#define JZ4740_CLK_LCD 8
+#define JZ4740_CLK_LCD_PCLK 9
+#define JZ4740_CLK_I2S 10
+#define JZ4740_CLK_SPI 11
+#define JZ4740_CLK_MMC 12
+#define JZ4740_CLK_UHC 13
+#define JZ4740_CLK_UDC 14
+#define JZ4740_CLK_UART0 15
+#define JZ4740_CLK_UART1 16
+#define JZ4740_CLK_DMA 17
+#define JZ4740_CLK_IPU 18
+#define JZ4740_CLK_ADC 19
+#define JZ4740_CLK_I2C 20
+#define JZ4740_CLK_AIC 21
+
+#endif /* __DT_BINDINGS_CLOCK_JZ4740_CGU_H__ */
diff --git a/include/dt-bindings/clock/jz4780-cgu.h b/include/dt-bindings/clock/jz4780-cgu.h
new file mode 100644
index 0000000..467165e
--- /dev/null
+++ b/include/dt-bindings/clock/jz4780-cgu.h
@@ -0,0 +1,88 @@
+/*
+ * This header provides clock numbers for the ingenic,jz4780-cgu DT binding.
+ *
+ * They are roughly ordered as:
+ * - external clocks
+ * - PLLs
+ * - muxes/dividers in the order they appear in the jz4780 programmers manual
+ * - gates in order of their bit in the CLKGR* registers
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_JZ4780_CGU_H__
+#define __DT_BINDINGS_CLOCK_JZ4780_CGU_H__
+
+#define JZ4780_CLK_EXCLK 0
+#define JZ4780_CLK_RTCLK 1
+#define JZ4780_CLK_APLL 2
+#define JZ4780_CLK_MPLL 3
+#define JZ4780_CLK_EPLL 4
+#define JZ4780_CLK_VPLL 5
+#define JZ4780_CLK_OTGPHY 6
+#define JZ4780_CLK_SCLKA 7
+#define JZ4780_CLK_CPUMUX 8
+#define JZ4780_CLK_CPU 9
+#define JZ4780_CLK_L2CACHE 10
+#define JZ4780_CLK_AHB0 11
+#define JZ4780_CLK_AHB2PMUX 12
+#define JZ4780_CLK_AHB2 13
+#define JZ4780_CLK_PCLK 14
+#define JZ4780_CLK_DDR 15
+#define JZ4780_CLK_VPU 16
+#define JZ4780_CLK_I2SPLL 17
+#define JZ4780_CLK_I2S 18
+#define JZ4780_CLK_LCD0PIXCLK 19
+#define JZ4780_CLK_LCD1PIXCLK 20
+#define JZ4780_CLK_MSCMUX 21
+#define JZ4780_CLK_MSC0 22
+#define JZ4780_CLK_MSC1 23
+#define JZ4780_CLK_MSC2 24
+#define JZ4780_CLK_UHC 25
+#define JZ4780_CLK_SSIPLL 26
+#define JZ4780_CLK_SSI 27
+#define JZ4780_CLK_CIMMCLK 28
+#define JZ4780_CLK_PCMPLL 29
+#define JZ4780_CLK_PCM 30
+#define JZ4780_CLK_GPU 31
+#define JZ4780_CLK_HDMI 32
+#define JZ4780_CLK_BCH 33
+#define JZ4780_CLK_NEMC 34
+#define JZ4780_CLK_OTG0 35
+#define JZ4780_CLK_SSI0 36
+#define JZ4780_CLK_SMB0 37
+#define JZ4780_CLK_SMB1 38
+#define JZ4780_CLK_SCC 39
+#define JZ4780_CLK_AIC 40
+#define JZ4780_CLK_TSSI0 41
+#define JZ4780_CLK_OWI 42
+#define JZ4780_CLK_KBC 43
+#define JZ4780_CLK_SADC 44
+#define JZ4780_CLK_UART0 45
+#define JZ4780_CLK_UART1 46
+#define JZ4780_CLK_UART2 47
+#define JZ4780_CLK_UART3 48
+#define JZ4780_CLK_SSI1 49
+#define JZ4780_CLK_SSI2 50
+#define JZ4780_CLK_PDMA 51
+#define JZ4780_CLK_GPS 52
+#define JZ4780_CLK_MAC 53
+#define JZ4780_CLK_SMB2 54
+#define JZ4780_CLK_CIM 55
+#define JZ4780_CLK_LCD 56
+#define JZ4780_CLK_TVE 57
+#define JZ4780_CLK_IPU 58
+#define JZ4780_CLK_DDR0 59
+#define JZ4780_CLK_DDR1 60
+#define JZ4780_CLK_SMB3 61
+#define JZ4780_CLK_TSSI1 62
+#define JZ4780_CLK_COMPRESS 63
+#define JZ4780_CLK_AIC1 64
+#define JZ4780_CLK_GPVLC 65
+#define JZ4780_CLK_OTG1 66
+#define JZ4780_CLK_UART4 67
+#define JZ4780_CLK_AHBMON 68
+#define JZ4780_CLK_SMB4 69
+#define JZ4780_CLK_DES 70
+#define JZ4780_CLK_X2D 71
+#define JZ4780_CLK_CORE1 72
+
+#endif /* __DT_BINDINGS_CLOCK_JZ4780_CGU_H__ */
--
2.4.1
--
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