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https://github.com/AsahiLinux/u-boot
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609bd60b94
This is effectively a complete rewrite to remove all dependency on CCF. The code is now smaller, and so is the binary. It also takes up less memory at runtime (since we don't have to create 40 udevices). In general, I am much happier with this driver as much of the complexity and late binding has been removed. The k210_*_params structs which were previously used to initialize CCF clocks are now used as the complete configuration. Since we can write our own division logic, we can now do away with several "half" clocks which only existed to provide constant factors of two. The clock IDs have been renumbered to remove unused clocks. This may not be the last time they are renumbered, since we have diverged with Linux. There are also still a few clocks left out which may need to be added back in. In general, I have tried to leave out behavioral changes. However, there is a small bugfix regarding ACLK. According to the technical reference manual, its mux comes *after* its divider (which is present only for PLL0). This would have required yet another intermediate clock to fix with CCF, but with the new driver it is just 2 lines of code :) Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2019-21 Sean Anderson <seanga2@gmail.com>
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*/
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#ifndef CLOCK_K210_SYSCTL_H
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#define CLOCK_K210_SYSCTL_H
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/*
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* Arbitrary identifiers for clocks.
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*/
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#define K210_CLK_PLL0 0
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#define K210_CLK_PLL1 1
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#define K210_CLK_PLL2 2
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#define K210_CLK_CPU 3
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#define K210_CLK_SRAM0 4
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#define K210_CLK_SRAM1 5
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#define K210_CLK_ACLK 6
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#define K210_CLK_CLINT 7
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#define K210_CLK_APB0 8
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#define K210_CLK_APB1 9
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#define K210_CLK_APB2 10
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#define K210_CLK_ROM 11
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#define K210_CLK_DMA 12
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#define K210_CLK_AI 13
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#define K210_CLK_DVP 14
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#define K210_CLK_FFT 15
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#define K210_CLK_GPIO 16
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#define K210_CLK_SPI0 17
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#define K210_CLK_SPI1 18
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#define K210_CLK_SPI2 19
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#define K210_CLK_SPI3 20
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#define K210_CLK_I2S0 21
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#define K210_CLK_I2S1 22
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#define K210_CLK_I2S2 23
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#define K210_CLK_I2S0_M 24
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#define K210_CLK_I2S1_M 25
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#define K210_CLK_I2S2_M 26
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#define K210_CLK_I2C0 27
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#define K210_CLK_I2C1 28
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#define K210_CLK_I2C2 29
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#define K210_CLK_UART1 30
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#define K210_CLK_UART2 31
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#define K210_CLK_UART3 32
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#define K210_CLK_AES 33
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#define K210_CLK_FPIOA 34
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#define K210_CLK_TIMER0 35
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#define K210_CLK_TIMER1 36
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#define K210_CLK_TIMER2 37
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#define K210_CLK_WDT0 38
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#define K210_CLK_WDT1 39
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#define K210_CLK_SHA 40
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#define K210_CLK_OTP 41
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#define K210_CLK_RTC 42
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#define K210_CLK_IN0 43
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#endif /* CLOCK_K210_SYSCTL_H */
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