mirror of
https://github.com/AsahiLinux/u-boot
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b1aef0384f
As pointed by [1] and [2], commit
d64b9cdcd4 ("fdt: translate address if #size-cells = <0>") is wrong:
- It makes every 'reg' DT property translatable. It changes the address
translation so that for an I2C 'reg' address you'll get back as reg
the I2C controller address + reg value.
- The quirk must be fixed with platform code.
The clk_ti_get_reg_addr() is the platform code able to make the correct
address translation for the AM33xx clocks registers. Its implementation
was inspired by the Linux Kernel code.
[1] https://patchwork.ozlabs.org/project/uboot/patch/1614324949-61314-1-git-send-email-bmeng.cn@gmail.com/
[2] https://lore.kernel.org/linux-clk/20210402192054.7934-1-dariobin@libero.it/T/
Signed-off-by: Dario Binacchi <dariobin@libero.it>
26 lines
630 B
C
26 lines
630 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* TI clock utilities header
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*
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* Copyright (C) 2020 Dario Binacchi <dariobin@libero.it>
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*/
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#ifndef _CLK_TI_H
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#define _CLK_TI_H
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void clk_ti_latch(fdt_addr_t reg, s8 shift);
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/**
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* struct clk_ti_reg - TI register declaration
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* @offset: offset from the master IP module base address
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* @index: index of the master IP module
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*/
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struct clk_ti_reg {
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u16 offset;
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u8 index;
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};
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void clk_ti_writel(u32 val, struct clk_ti_reg *reg);
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u32 clk_ti_readl(struct clk_ti_reg *reg);
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int clk_ti_get_reg_addr(struct udevice *dev, int index, struct clk_ti_reg *reg);
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#endif /* #ifndef _CLK_TI_H */
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