[PATCH 1/6] ARM: tegra20: create a DT header defining CLK IDs
Hiroshi Doyu
hdoyu at nvidia.com
Mon May 13 21:07:00 EST 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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