[PATCH 1/6] ARM: tegra20: create a DT header defining CLK IDs

Hiroshi Doyu hdoyu at nvidia.com
Mon May 13 07:07:00 EDT 2013


To replace magic number in tegra_car:

-               clocks = <&tegra_car 28>;
+               clocks = <&tegra_car CLK_HOST1X>;

Signed-off-by: Hiroshi Doyu <hdoyu at nvidia.com>
---
 .../bindings/clock/nvidia,tegra20-car.txt          | 152 +-------------------
 include/dt-bindings/clk/tegra20-car.h              | 158 +++++++++++++++++++++
 2 files changed, 161 insertions(+), 149 deletions(-)
 create mode 100644 include/dt-bindings/clk/tegra20-car.h

diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt
index e885680..edc30f6 100644
--- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt
@@ -3,6 +3,8 @@ NVIDIA Tegra20 Clock And Reset Controller
 This binding uses the common clock binding:
 Documentation/devicetree/bindings/clock/clock-bindings.txt
 
+You can find the actual assignment in "dt-bindings/clk/tegra20-car.h"
+
 The CAR (Clock And Reset) Controller on Tegra is the HW module responsible
 for muxing and gating Tegra's clocks, and setting their rates.
 
@@ -14,154 +16,6 @@ Required properties :
 - #clock-cells : Should be 1.
   In clock consumers, this cell represents the clock ID exposed by the CAR.
 
-  The first 96 clocks are numbered to match the bits in the CAR's CLK_OUT_ENB
-  registers. These IDs often match those in the CAR's RST_DEVICES registers,
-  but not in all cases. Some bits in CLK_OUT_ENB affect multiple clocks. In
-  this case, those clocks are assigned IDs above 95 in order to highlight
-  this issue. Implementations that interpret these clock IDs as bit values
-  within the CLK_OUT_ENB or RST_DEVICES registers should be careful to
-  explicitly handle these special cases.
-
-  The balance of the clocks controlled by the CAR are assigned IDs of 96 and
-  above.
-
-  0	cpu
-  1	unassigned
-  2	unassigned
-  3	ac97
-  4	rtc
-  5	tmr
-  6	uart1
-  7	unassigned	(register bit affects uart2 and vfir)
-  8	gpio
-  9	sdmmc2
-  10	unassigned	(register bit affects spdif_in and spdif_out)
-  11	i2s1
-  12	i2c1
-  13	ndflash
-  14	sdmmc1
-  15	sdmmc4
-  16	twc
-  17	pwm
-  18	i2s2
-  19	epp
-  20	unassigned	(register bit affects vi and vi_sensor)
-  21	2d
-  22	usbd
-  23	isp
-  24	3d
-  25	ide
-  26	disp2
-  27	disp1
-  28	host1x
-  29	vcp
-  30	unassigned
-  31	cache2
-
-  32	mem
-  33	ahbdma
-  34	apbdma
-  35	unassigned
-  36	kbc
-  37	stat_mon
-  38	pmc
-  39	fuse
-  40	kfuse
-  41	sbc1
-  42	snor
-  43	spi1
-  44	sbc2
-  45	xio
-  46	sbc3
-  47	dvc
-  48	dsi
-  49	unassigned	(register bit affects tvo and cve)
-  50	mipi
-  51	hdmi
-  52	csi
-  53	tvdac
-  54	i2c2
-  55	uart3
-  56	unassigned
-  57	emc
-  58	usb2
-  59	usb3
-  60	mpe
-  61	vde
-  62	bsea
-  63	bsev
-
-  64	speedo
-  65	uart4
-  66	uart5
-  67	i2c3
-  68	sbc4
-  69	sdmmc3
-  70	pcie
-  71	owr
-  72	afi
-  73	csite
-  74	unassigned
-  75	avpucq
-  76	la
-  77	unassigned
-  78	unassigned
-  79	unassigned
-  80	unassigned
-  81	unassigned
-  82	unassigned
-  83	unassigned
-  84	irama
-  85	iramb
-  86	iramc
-  87	iramd
-  88	cram2
-  89	audio_2x	a/k/a audio_2x_sync_clk
-  90	clk_d
-  91	unassigned
-  92	sus
-  93	cdev2
-  94	cdev1
-  95	unassigned
-
-  96	uart2
-  97	vfir
-  98	spdif_in
-  99	spdif_out
-  100	vi
-  101	vi_sensor
-  102	tvo
-  103	cve
-  104	osc
-  105	clk_32k		a/k/a clk_s
-  106	clk_m
-  107	sclk
-  108	cclk
-  109	hclk
-  110	pclk
-  111	blink
-  112	pll_a
-  113	pll_a_out0
-  114	pll_c
-  115	pll_c_out1
-  116	pll_d
-  117	pll_d_out0
-  118	pll_e
-  119	pll_m
-  120	pll_m_out1
-  121	pll_p
-  122	pll_p_out1
-  123	pll_p_out2
-  124	pll_p_out3
-  125	pll_p_out4
-  126	pll_s
-  127	pll_u
-  128	pll_x
-  129	cop		a/k/a avp
-  130	audio		a/k/a audio_sync_clk
-  131	pll_ref
-  132	twd
-
 Example SoC include file:
 
 / {
@@ -172,7 +26,7 @@ Example SoC include file:
 	};
 
 	usb at c5004000 {
-		clocks = <&tegra_car 58>; /* usb2 */
+		clocks = <&tegra_car TEGRA20_CLK_USB2>; /* usb2 */
 	};
 };
 
diff --git a/include/dt-bindings/clk/tegra20-car.h b/include/dt-bindings/clk/tegra20-car.h
new file mode 100644
index 0000000..e30b4bd
--- /dev/null
+++ b/include/dt-bindings/clk/tegra20-car.h
@@ -0,0 +1,158 @@
+/*
+ * This header provides constants for binding nvidia,tegra20-car.
+ *
+ * The first 96 clocks are numbered to match the bits in the CAR's CLK_OUT_ENB
+ * registers. These IDs often match those in the CAR's RST_DEVICES registers,
+ * but not in all cases. Some bits in CLK_OUT_ENB affect multiple clocks. In
+ * this case, those clocks are assigned IDs above 95 in order to highlight
+ * this issue. Implementations that interpret these clock IDs as bit values
+ * within the CLK_OUT_ENB or RST_DEVICES registers should be careful to
+ * explicitly handle these special cases.
+ *
+ * The balance of the clocks controlled by the CAR are assigned IDs of 96 and
+ * above.
+ */
+
+#ifndef _DT_BINDINGS_CLK_TEGRA20_CAR_H
+#define _DT_BINDINGS_CLK_TEGRA20_CAR_H
+
+#define TEGRA20_CLK_CPU 0
+/* 1 */
+/* 2 */
+#define TEGRA20_CLK_AC97 3
+#define TEGRA20_CLK_RTC 4
+#define TEGRA20_CLK_TIMER 5
+#define TEGRA20_CLK_UARTA 6
+/* 7 (register bit affects uart2 and vfir) */
+#define TEGRA20_CLK_GPIO 8
+#define TEGRA20_CLK_SDMMC2 9
+/* 10 (register bit affects spdif_in and spdif_out) */
+#define TEGRA20_CLK_I2S1 11
+#define TEGRA20_CLK_I2C1 12
+#define TEGRA20_CLK_NDFLASH 13
+#define TEGRA20_CLK_SDMMC1 14
+#define TEGRA20_CLK_SDMMC4 15
+#define TEGRA20_CLK_TWC 16
+#define TEGRA20_CLK_PWM 17
+#define TEGRA20_CLK_I2S2 18
+#define TEGRA20_CLK_EPP 19
+/* 20 (register bit affects vi and vi_sensor) */
+#define TEGRA20_CLK_GR2D 21
+#define TEGRA20_CLK_USBD 22
+#define TEGRA20_CLK_ISP 23
+#define TEGRA20_CLK_GR3D 24
+#define TEGRA20_CLK_IDE 25
+#define TEGRA20_CLK_DISP2 26
+#define TEGRA20_CLK_DISP1 27
+#define TEGRA20_CLK_HOST1X 28
+#define TEGRA20_CLK_VCP 29
+/* 30 */
+#define TEGRA20_CLK_CACHE2 31
+
+#define TEGRA20_CLK_MEM 32
+#define TEGRA20_CLK_AHBDMA 33
+#define TEGRA20_CLK_APBDMA 34
+/* 35 */
+#define TEGRA20_CLK_KBC 36
+#define TEGRA20_CLK_STAT_MON 37
+#define TEGRA20_CLK_PMC 38
+#define TEGRA20_CLK_FUSE 39
+#define TEGRA20_CLK_KFUSE 40
+#define TEGRA20_CLK_SBC1 41
+#define TEGRA20_CLK_NOR 42
+#define TEGRA20_CLK_SPI 43
+#define TEGRA20_CLK_SBC2 44
+#define TEGRA20_CLK_XIO 45
+#define TEGRA20_CLK_SBC3 46
+#define TEGRA20_CLK_DVC 47
+#define TEGRA20_CLK_DSI 48
+/* 49 (register bit affects tvo and cve) */
+#define TEGRA20_CLK_MIPI 50
+#define TEGRA20_CLK_HDMI 51
+#define TEGRA20_CLK_CSI 52
+#define TEGRA20_CLK_TVDAC 53
+#define TEGRA20_CLK_I2C2 54
+#define TEGRA20_CLK_UARTC 55
+/* 56 */
+#define TEGRA20_CLK_EMC 57
+#define TEGRA20_CLK_USB2 58
+#define TEGRA20_CLK_USB3 59
+#define TEGRA20_CLK_MPE 60
+#define TEGRA20_CLK_VDE 61
+#define TEGRA20_CLK_BSEA 62
+#define TEGRA20_CLK_BSEV 63
+
+#define TEGRA20_CLK_SPEEDO 64
+#define TEGRA20_CLK_UARTD 65
+#define TEGRA20_CLK_UARTE 66
+#define TEGRA20_CLK_I2C3 67
+#define TEGRA20_CLK_SBC4 68
+#define TEGRA20_CLK_SDMMC3 69
+#define TEGRA20_CLK_PEX 70
+#define TEGRA20_CLK_OWR 71
+#define TEGRA20_CLK_AFI 72
+#define TEGRA20_CLK_CSITE 73
+#define TEGRA20_CLK_PCIE_XCLK 74
+#define TEGRA20_CLK_AVPUCQ 75
+#define TEGRA20_CLK_LA 76
+/* 77 */
+/* 78 */
+/* 79 */
+/* 80 */
+/* 81 */
+/* 82 */
+/* 83 */
+#define TEGRA20_CLK_IRAMA 84
+#define TEGRA20_CLK_IRAMB 85
+#define TEGRA20_CLK_IRAMC 86
+#define TEGRA20_CLK_IRAMD 87
+#define TEGRA20_CLK_CRAM2 88
+#define TEGRA20_CLK_AUDIO_2X 89 /* a/k/a audio_2x_sync_clk */
+#define TEGRA20_CLK_CLK_D 90
+/* 91 */
+#define TEGRA20_CLK_CSUS 92
+#define TEGRA20_CLK_CDEV2 93
+#define TEGRA20_CLK_CDEV1 94
+/* 95 */
+
+#define TEGRA20_CLK_UARTB 96
+#define TEGRA20_CLK_VFIR 97
+#define TEGRA20_CLK_SPDIF_IN 98
+#define TEGRA20_CLK_SPDIF_OUT 99
+#define TEGRA20_CLK_VI 100
+#define TEGRA20_CLK_VI_SENSOR 101
+#define TEGRA20_CLK_TVO 102
+#define TEGRA20_CLK_CVE 103
+#define TEGRA20_CLK_OSC 104
+#define TEGRA20_CLK_CLK_32K 105 /* a/k/a clk_s */
+#define TEGRA20_CLK_CLK_M 106
+#define TEGRA20_CLK_SCLK 107
+#define TEGRA20_CLK_CCLK 108
+#define TEGRA20_CLK_HCLK 109
+#define TEGRA20_CLK_PCLK 110
+#define TEGRA20_CLK_BLINK 111
+#define TEGRA20_CLK_PLL_A 112
+#define TEGRA20_CLK_PLL_A_OUT0 113
+#define TEGRA20_CLK_PLL_C 114
+#define TEGRA20_CLK_PLL_C_OUT1 115
+#define TEGRA20_CLK_PLL_D 116
+#define TEGRA20_CLK_PLL_D_OUT0 117
+#define TEGRA20_CLK_PLL_E 118
+#define TEGRA20_CLK_PLL_M 119
+#define TEGRA20_CLK_PLL_M_OUT1 120
+#define TEGRA20_CLK_PLL_P 121
+#define TEGRA20_CLK_PLL_P_OUT1 122
+#define TEGRA20_CLK_PLL_P_OUT2 123
+#define TEGRA20_CLK_PLL_P_OUT3 124
+#define TEGRA20_CLK_PLL_P_OUT4 125
+#define TEGRA20_CLK_PLL_S 126
+#define TEGRA20_CLK_PLL_U 127
+
+#define TEGRA20_CLK_PLL_X 128
+#define TEGRA20_CLK_COP 129 /* a/k/a avp */
+#define TEGRA20_CLK_AUDIO 130 /* a/k/a audio_sync_clk */
+#define TEGRA20_CLK_PLL_REF 131
+#define TEGRA20_CLK_TWD 132
+#define TEGRA20_CLK_CLK_MAX 133
+
+#endif	/* _DT_BINDINGS_CLK_TEGRA20_CAR_H */
-- 
1.8.1.5




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