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linux-next/Documentation/devicetree/bindings/clock/imx6q-clock.txt

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ARM: imx6q: replace clk_register_clkdev with clock DT lookup It really becomes an maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx6q client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 21:36:28 +08:00
* Clock bindings for Freescale i.MX6 Quad
Required properties:
- compatible: Should be "fsl,imx6q-ccm"
- reg: Address and length of the register set
- interrupts: Should contain CCM interrupt
- #clock-cells: Should be <1>
The clock consumer should specify the desired clock by having the clock
ID in its "clocks" phandle cell. The following is a full list of i.MX6Q
clocks and IDs.
Clock ID
---------------------------
dummy 0
ckil 1
ckih 2
osc 3
pll2_pfd0_352m 4
pll2_pfd1_594m 5
pll2_pfd2_396m 6
pll3_pfd0_720m 7
pll3_pfd1_540m 8
pll3_pfd2_508m 9
pll3_pfd3_454m 10
pll2_198m 11
pll3_120m 12
pll3_80m 13
pll3_60m 14
twd 15
step 16
pll1_sw 17
periph_pre 18
periph2_pre 19
periph_clk2_sel 20
periph2_clk2_sel 21
axi_sel 22
esai_sel 23
asrc_sel 24
spdif_sel 25
gpu2d_axi 26
gpu3d_axi 27
gpu2d_core_sel 28
gpu3d_core_sel 29
gpu3d_shader_sel 30
ipu1_sel 31
ipu2_sel 32
ldb_di0_sel 33
ldb_di1_sel 34
ipu1_di0_pre_sel 35
ipu1_di1_pre_sel 36
ipu2_di0_pre_sel 37
ipu2_di1_pre_sel 38
ipu1_di0_sel 39
ipu1_di1_sel 40
ipu2_di0_sel 41
ipu2_di1_sel 42
hsi_tx_sel 43
pcie_axi_sel 44
ssi1_sel 45
ssi2_sel 46
ssi3_sel 47
usdhc1_sel 48
usdhc2_sel 49
usdhc3_sel 50
usdhc4_sel 51
enfc_sel 52
emi_sel 53
emi_slow_sel 54
vdo_axi_sel 55
vpu_axi_sel 56
cko1_sel 57
periph 58
periph2 59
periph_clk2 60
periph2_clk2 61
ipg 62
ipg_per 63
esai_pred 64
esai_podf 65
asrc_pred 66
asrc_podf 67
spdif_pred 68
spdif_podf 69
can_root 70
ecspi_root 71
gpu2d_core_podf 72
gpu3d_core_podf 73
gpu3d_shader 74
ipu1_podf 75
ipu2_podf 76
ldb_di0_podf 77
ldb_di1_podf 78
ipu1_di0_pre 79
ipu1_di1_pre 80
ipu2_di0_pre 81
ipu2_di1_pre 82
hsi_tx_podf 83
ssi1_pred 84
ssi1_podf 85
ssi2_pred 86
ssi2_podf 87
ssi3_pred 88
ssi3_podf 89
uart_serial_podf 90
usdhc1_podf 91
usdhc2_podf 92
usdhc3_podf 93
usdhc4_podf 94
enfc_pred 95
enfc_podf 96
emi_podf 97
emi_slow_podf 98
vpu_axi_podf 99
cko1_podf 100
axi 101
mmdc_ch0_axi_podf 102
mmdc_ch1_axi_podf 103
arm 104
ahb 105
apbh_dma 106
asrc 107
can1_ipg 108
can1_serial 109
can2_ipg 110
can2_serial 111
ecspi1 112
ecspi2 113
ecspi3 114
ecspi4 115
ecspi5 116
enet 117
esai 118
gpt_ipg 119
gpt_ipg_per 120
gpu2d_core 121
gpu3d_core 122
hdmi_iahb 123
hdmi_isfr 124
i2c1 125
i2c2 126
i2c3 127
iim 128
enfc 129
ipu1 130
ipu1_di0 131
ipu1_di1 132
ipu2 133
ipu2_di0 134
ldb_di0 135
ldb_di1 136
ipu2_di1 137
hsi_tx 138
mlb 139
mmdc_ch0_axi 140
mmdc_ch1_axi 141
ocram 142
openvg_axi 143
pcie_axi 144
pwm1 145
pwm2 146
pwm3 147
pwm4 148
per1_bch 149
gpmi_bch_apb 150
gpmi_bch 151
gpmi_io 152
gpmi_apb 153
sata 154
sdma 155
spba 156
ssi1 157
ssi2 158
ssi3 159
uart_ipg 160
uart_serial 161
usboh3 162
usdhc1 163
usdhc2 164
usdhc3 165
usdhc4 166
vdo_axi 167
vpu_axi 168
cko1 169
pll1_sys 170
pll2_bus 171
pll3_usb_otg 172
pll4_audio 173
pll5_video 174
ARM i.MX6: rename PLLs according to datasheet In recent reference manuals the PLLs were renumbered. PLL8 now is PLL6 and vice versa. Change the code according to the reference manual to avoid confusion. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2012-11-22 17:05:13 +08:00
pll8_mlb 175
ARM: imx6q: replace clk_register_clkdev with clock DT lookup It really becomes an maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx6q client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 21:36:28 +08:00
pll7_usb_host 176
ARM i.MX6: rename PLLs according to datasheet In recent reference manuals the PLLs were renumbered. PLL8 now is PLL6 and vice versa. Change the code according to the reference manual to avoid confusion. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2012-11-22 17:05:13 +08:00
pll6_enet 177
ARM: imx6q: replace clk_register_clkdev with clock DT lookup It really becomes an maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx6q client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 21:36:28 +08:00
ssi1_ipg 178
ssi2_ipg 179
ssi3_ipg 180
rom 181
usbphy1 182
usbphy2 183
ldb_di0_div_3_5 184
ldb_di1_div_3_5 185
ARM i.MX6: Fix ethernet PLL clocks In current code the ethernet PLL is not handled correctly. The PLL runs at 500MHz and has different outputs. Only the enet reference clock is implemented. This patch changes the PLL so that it outputs 500MHz and adds the additional outputs as dividers. This now matches the datasheet which says: > This PLL synthesizes a low jitter clock from 24 MHz reference clock. > The PLL outputs a 500 MHz clock. The reference clocks generated by this PLL are: > • Ref_PCIe = 125 MHz > • Ref_SATA = 100 MHz > • Ref_ethernet, which is configurable based on the PLL_ENET[1:0] register field. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2012-11-21 21:42:31 +08:00
sata_ref 186
sata_ref_100m 187
pcie_ref 188
pcie_ref_125m 189
enet_ref 190
ARM i.MX6: change mxs usbphy clock usage This mxs usbphy is only needs to be on after system boots up, and software never needs to control it anymore. Meanwhile, usbphy's parent needs to be notified if usb is suspend or not. So we design below mxs usbphy usage: - usbphy1_gate and usbphy2_gate: Their parents are dummy clock, we only needs to enable it after system boots up. - usbphy1 and usbphy2 Usage reserved bit for this clock, in that case, the refcount will be updated, but without hardware changing. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-01-18 10:38:05 +08:00
usbphy1_gate 191
usbphy2_gate 192
ARM: imx6q: replace clk_register_clkdev with clock DT lookup It really becomes an maintenance issue that every time a device needs to look up (clk_get) a clock we have to patch kernel clock file to call clk_register_clkdev for that clock. Since clock DT support which is meant to resolve clock lookup in device tree is in place, the patch moves imx6q client devices' clock lookup over to device tree, so that any new lookup to be added at later time can just get done in DT instead of kernel. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-08-22 21:36:28 +08:00
Examples:
clks: ccm@020c4000 {
compatible = "fsl,imx6q-ccm";
reg = <0x020c4000 0x4000>;
interrupts = <0 87 0x04 0 88 0x04>;
#clock-cells = <1>;
};
uart1: serial@02020000 {
compatible = "fsl,imx6q-uart", "fsl,imx21-uart";
reg = <0x02020000 0x4000>;
interrupts = <0 26 0x04>;
clocks = <&clks 160>, <&clks 161>;
clock-names = "ipg", "per";
status = "disabled";
};
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