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05359be117
The A83T clock control unit is a hybrid of some new style clock designs from the A80, and old style layout from the other Allwinner SoCs. Like the A80, the SoC does not have a low speed 32.768 kHz oscillator. Unlike the A80, there is no clock input either. The only low speed clock available is the internal oscillator which runs at around 16 MHz, divided by 512, yielding a low speed clock around 31.250 kHz. Also, the MMC2 module clock supports switching to a "new timing" mode. This mode divides the clock output by half, and disables the CCU based clock delays. The MMC controller must be configure to the same mode, and then use its internal clock delays. This driver does not support runtime switching of the timing modes. Instead, the new timing mode is enforced at probe time. Consumers can check which mode is active by trying to get the current phase delay of the MMC2 phase clocks, which will return -ENOTSUPP if the new timing mode is active. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
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*
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* This file is dual-licensed: you can use it either under the terms
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* of the GPL or the X11 license, at your option. Note that this dual
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* licensing only applies to this file, and not this project as a
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* whole.
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*
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* a) This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Or, alternatively,
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*
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* b) Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _DT_BINDINGS_CLOCK_SUN8I_A83T_CCU_H_
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#define _DT_BINDINGS_CLOCK_SUN8I_A83T_CCU_H_
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#define CLK_PLL_PERIPH 6
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#define CLK_PLL_DE 9
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#define CLK_C0CPUX 11
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#define CLK_C1CPUX 12
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#define CLK_BUS_MIPI_DSI 19
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#define CLK_BUS_SS 20
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#define CLK_BUS_DMA 21
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#define CLK_BUS_MMC0 22
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#define CLK_BUS_MMC1 23
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#define CLK_BUS_MMC2 24
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#define CLK_BUS_NAND 25
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#define CLK_BUS_DRAM 26
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#define CLK_BUS_EMAC 27
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#define CLK_BUS_HSTIMER 28
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#define CLK_BUS_SPI0 29
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#define CLK_BUS_SPI1 30
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#define CLK_BUS_OTG 31
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#define CLK_BUS_EHCI0 32
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#define CLK_BUS_EHCI1 33
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#define CLK_BUS_OHCI0 34
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#define CLK_BUS_VE 35
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#define CLK_BUS_TCON0 36
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#define CLK_BUS_TCON1 37
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#define CLK_BUS_CSI 38
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#define CLK_BUS_HDMI 39
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#define CLK_BUS_DE 40
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#define CLK_BUS_GPU 41
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#define CLK_BUS_MSGBOX 42
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#define CLK_BUS_SPINLOCK 43
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#define CLK_BUS_SPDIF 44
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#define CLK_BUS_PIO 45
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#define CLK_BUS_I2S0 46
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#define CLK_BUS_I2S1 47
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#define CLK_BUS_I2S2 48
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#define CLK_BUS_TDM 49
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#define CLK_BUS_I2C0 50
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#define CLK_BUS_I2C1 51
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#define CLK_BUS_I2C2 52
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#define CLK_BUS_UART0 53
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#define CLK_BUS_UART1 54
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#define CLK_BUS_UART2 55
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#define CLK_BUS_UART3 56
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#define CLK_BUS_UART4 57
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#define CLK_NAND 59
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#define CLK_MMC0 60
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#define CLK_MMC0_SAMPLE 61
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#define CLK_MMC0_OUTPUT 62
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#define CLK_MMC1 63
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#define CLK_MMC1_SAMPLE 64
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#define CLK_MMC1_OUTPUT 65
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#define CLK_MMC2 66
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#define CLK_MMC2_SAMPLE 67
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#define CLK_MMC2_OUTPUT 68
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#define CLK_SS 69
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#define CLK_SPI0 70
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#define CLK_SPI1 71
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#define CLK_I2S0 72
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#define CLK_I2S1 73
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#define CLK_I2S2 74
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#define CLK_TDM 75
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#define CLK_SPDIF 76
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#define CLK_USB_PHY0 77
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#define CLK_USB_PHY1 78
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#define CLK_USB_HSIC 79
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#define CLK_USB_HSIC_12M 80
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#define CLK_USB_OHCI0 81
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#define CLK_DRAM_VE 83
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#define CLK_DRAM_CSI 84
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#define CLK_TCON0 85
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#define CLK_TCON1 86
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#define CLK_CSI_MISC 87
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#define CLK_MIPI_CSI 88
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#define CLK_CSI_MCLK 89
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#define CLK_CSI_SCLK 90
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#define CLK_VE 91
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#define CLK_AVS 92
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#define CLK_HDMI 93
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#define CLK_HDMI_SLOW 94
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#define CLK_MIPI_DSI0 96
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#define CLK_MIPI_DSI1 97
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#define CLK_GPU_CORE 98
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#define CLK_GPU_MEMORY 99
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#define CLK_GPU_HYD 100
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#endif /* _DT_BINDINGS_CLOCK_SUN8I_A83T_CCU_H_ */
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