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authorOlof Johansson <olof@lixom.net>2013-02-05 12:13:10 -0800
committerOlof Johansson <olof@lixom.net>2013-02-05 12:13:10 -0800
commitbda6f8e6cdcdb55db9b2961b6a7c9d0d97da4765 (patch)
treecec7c71c5120538352157fa1d2826efe881a7b0c /Documentation/devicetree
parentc35a0bfacb61f5c56e0e64f309d36c59c7fe8da3 (diff)
parentef3ffe5a0458606c488def757bb7f6dd013c2db5 (diff)
Merge tag 'tegra-for-3.9-soc-ccf' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stephen Warren: ARM: tegra: Common Clock Framework rework Tegra already supports the common clock framework, but had issues: 1) The clock driver was located in arch/arm/mach-tegra/ rather than drivers/clk/. 2) A single "Tegra clock" type was implemented, rather than separate clock types for PLL, mux, divider, ... type in HW. 3) Clock lookups by device drivers were still driven by device name and connection ID, rather than through device tree. This pull request solves all three issues. This required some DT changes to add clocks properties, and driver changes to request clocks more "correctly". Finally, this rework allows all AUXDATA to be removed from Tegra board files, and various duplicate clock lookup entries to be removed from the driver. This pull request is based on the previous pull request, with tag tegra-for-3.9-cleanup. * tag 'tegra-for-3.9-soc-ccf' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (31 commits) clk: tegra30: remove unused TEGRA_CLK_DUPLICATE()s clk: tegra20: remove unused TEGRA_CLK_DUPLICATE()s ARM: tegra30: remove auxdata ARM: tegra20: remove auxdata ASoC: tegra: remove auxdata staging: nvec: remove use of clk_get_sys ARM: tegra: paz00: add clock information to DT ARM: tegra: add clock properties to Tegra30 DT ARM: tegra: add clock properties to Tegra20 DT spi: tegra: do not use clock name to get clock ARM: tegra: remove legacy clock code ARM: tegra: migrate to new clock code clk: tegra: add clock support for Tegra30 clk: tegra: add clock support for Tegra20 clk: tegra: add Tegra specific clocks ARM: tegra: define Tegra30 CAR binding ARM: tegra: define Tegra20 CAR binding ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h ARM: tegra: add function to read chipid ARM: tegra: fix compile error when disable CPU_IDLE ... Signed-off-by: Olof Johansson <olof@lixom.net> Conflicts: arch/arm/mach-tegra/board-dt-tegra20.c arch/arm/mach-tegra/board-dt-tegra30.c arch/arm/mach-tegra/common.c arch/arm/mach-tegra/platsmp.c drivers/clocksource/Makefile
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt205
-rw-r--r--Documentation/devicetree/bindings/clock/nvidia,tegra30-car.txt262
2 files changed, 467 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt
new file mode 100644
index 00000000000..0921fac7352
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt
@@ -0,0 +1,205 @@
+NVIDIA Tegra20 Clock And Reset Controller
+
+This binding uses the common clock binding:
+Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+The CAR (Clock And Reset) Controller on Tegra is the HW module responsible
+for muxing and gating Tegra's clocks, and setting their rates.
+
+Required properties :
+- compatible : Should be "nvidia,tegra20-car"
+- reg : Should contain CAR registers location and length
+- clocks : Should contain phandle and clock specifiers for two clocks:
+ the 32 KHz "32k_in", and the board-specific oscillator "osc".
+- #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 cdev1
+ 94 cdev2
+ 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:
+
+/ {
+ tegra_car: clock {
+ compatible = "nvidia,tegra20-car";
+ reg = <0x60006000 0x1000>;
+ #clock-cells = <1>;
+ };
+
+ usb@c5004000 {
+ clocks = <&tegra_car 58>; /* usb2 */
+ };
+};
+
+Example board file:
+
+/ {
+ clocks {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ osc: clock@0 {
+ compatible = "fixed-clock";
+ reg = <0>;
+ #clock-cells = <0>;
+ clock-frequency = <12000000>;
+ };
+
+ clk_32k: clock@1 {
+ compatible = "fixed-clock";
+ reg = <1>;
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+ };
+
+ &tegra_car {
+ clocks = <&clk_32k> <&osc>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra30-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra30-car.txt
new file mode 100644
index 00000000000..f3da3be5fca
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra30-car.txt
@@ -0,0 +1,262 @@
+NVIDIA Tegra30 Clock And Reset Controller
+
+This binding uses the common clock binding:
+Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+The CAR (Clock And Reset) Controller on Tegra is the HW module responsible
+for muxing and gating Tegra's clocks, and setting their rates.
+
+Required properties :
+- compatible : Should be "nvidia,tegra30-car"
+- reg : Should contain CAR registers location and length
+- clocks : Should contain phandle and clock specifiers for two clocks:
+ the 32 KHz "32k_in", and the board-specific oscillator "osc".
+- #clock-cells : Should be 1.
+ In clock consumers, this cell represents the clock ID exposed by the CAR.
+
+ The first 130 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 160 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 160 and
+ above.
+
+ 0 cpu
+ 1 unassigned
+ 2 unassigned
+ 3 unassigned
+ 4 rtc
+ 5 timer
+ 6 uarta
+ 7 unassigned (register bit affects uartb 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 unassigned
+ 17 pwm
+ 18 i2s2
+ 19 epp
+ 20 unassigned (register bit affects vi and vi_sensor)
+ 21 2d
+ 22 usbd
+ 23 isp
+ 24 3d
+ 25 unassigned
+ 26 disp2
+ 27 disp1
+ 28 host1x
+ 29 vcp
+ 30 i2s0
+ 31 cop_cache
+
+ 32 mc
+ 33 ahbdma
+ 34 apbdma
+ 35 unassigned
+ 36 kbc
+ 37 statmon
+ 38 pmc
+ 39 unassigned (register bit affects fuse and fuse_burn)
+ 40 kfuse
+ 41 sbc1
+ 42 nor
+ 43 unassigned
+ 44 sbc2
+ 45 unassigned
+ 46 sbc3
+ 47 i2c5
+ 48 dsia
+ 49 unassigned (register bit affects cve and tvo)
+ 50 mipi
+ 51 hdmi
+ 52 csi
+ 53 tvdac
+ 54 i2c2
+ 55 uartc
+ 56 unassigned
+ 57 emc
+ 58 usb2
+ 59 usb3
+ 60 mpe
+ 61 vde
+ 62 bsea
+ 63 bsev
+
+ 64 speedo
+ 65 uartd
+ 66 uarte
+ 67 i2c3
+ 68 sbc4
+ 69 sdmmc3
+ 70 pcie
+ 71 owr
+ 72 afi
+ 73 csite
+ 74 pciex
+ 75 avpucq
+ 76 la
+ 77 unassigned
+ 78 unassigned
+ 79 dtv
+ 80 ndspeed
+ 81 i2cslow
+ 82 dsib
+ 83 unassigned
+ 84 irama
+ 85 iramb
+ 86 iramc
+ 87 iramd
+ 88 cram2
+ 89 unassigned
+ 90 audio_2x a/k/a audio_2x_sync_clk
+ 91 unassigned
+ 92 csus
+ 93 cdev2
+ 94 cdev1
+ 95 unassigned
+
+ 96 cpu_g
+ 97 cpu_lp
+ 98 3d2
+ 99 mselect
+ 100 tsensor
+ 101 i2s3
+ 102 i2s4
+ 103 i2c4
+ 104 sbc5
+ 105 sbc6
+ 106 d_audio
+ 107 apbif
+ 108 dam0
+ 109 dam1
+ 110 dam2
+ 111 hda2codec_2x
+ 112 atomics
+ 113 audio0_2x
+ 114 audio1_2x
+ 115 audio2_2x
+ 116 audio3_2x
+ 117 audio4_2x
+ 118 audio5_2x
+ 119 actmon
+ 120 extern1
+ 121 extern2
+ 122 extern3
+ 123 sata_oob
+ 124 sata
+ 125 hda
+ 127 se
+ 128 hda2hdmi
+ 129 sata_cold
+
+ 160 uartb
+ 161 vfir
+ 162 spdif_in
+ 163 spdif_out
+ 164 vi
+ 165 vi_sensor
+ 166 fuse
+ 167 fuse_burn
+ 168 cve
+ 169 tvo
+
+ 170 clk_32k
+ 171 clk_m
+ 172 clk_m_div2
+ 173 clk_m_div4
+ 174 pll_ref
+ 175 pll_c
+ 176 pll_c_out1
+ 177 pll_m
+ 178 pll_m_out1
+ 179 pll_p
+ 180 pll_p_out1
+ 181 pll_p_out2
+ 182 pll_p_out3
+ 183 pll_p_out4
+ 184 pll_a
+ 185 pll_a_out0
+ 186 pll_d
+ 187 pll_d_out0
+ 188 pll_d2
+ 189 pll_d2_out0
+ 190 pll_u
+ 191 pll_x
+ 192 pll_x_out0
+ 193 pll_e
+ 194 spdif_in_sync
+ 195 i2s0_sync
+ 196 i2s1_sync
+ 197 i2s2_sync
+ 198 i2s3_sync
+ 199 i2s4_sync
+ 200 vimclk
+ 201 audio0
+ 202 audio1
+ 203 audio2
+ 204 audio3
+ 205 audio4
+ 206 audio5
+ 207 clk_out_1 (extern1)
+ 208 clk_out_2 (extern2)
+ 209 clk_out_3 (extern3)
+ 210 sclk
+ 211 blink
+ 212 cclk_g
+ 213 cclk_lp
+ 214 twd
+ 215 cml0
+ 216 cml1
+ 217 hclk
+ 218 pclk
+
+Example SoC include file:
+
+/ {
+ tegra_car: clock {
+ compatible = "nvidia,tegra30-car";
+ reg = <0x60006000 0x1000>;
+ #clock-cells = <1>;
+ };
+
+ usb@c5004000 {
+ clocks = <&tegra_car 58>; /* usb2 */
+ };
+};
+
+Example board file:
+
+/ {
+ clocks {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ osc: clock@0 {
+ compatible = "fixed-clock";
+ reg = <0>;
+ #clock-cells = <0>;
+ clock-frequency = <12000000>;
+ };
+
+ clk_32k: clock@1 {
+ compatible = "fixed-clock";
+ reg = <1>;
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+ };
+
+ &tegra_car {
+ clocks = <&clk_32k> <&osc>;
+ };
+};