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https://github.com/brain-hackers/u-boot-brain
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03c22449c5
DEVDISRn registers provides a mechanism for gating clocks of IP blocks that are not used. Here we implement hwconfig option to allow users to disable unused peripherals on the board. For ex. If eSDHC/qDMA/eDMA are unused and with disabled status in dts, User can enable CONFIG_FSL_DEVICE_DISABLE and set "devdis:esdhc,qdma,edma" in hwconfig, thus ESDHC controller & eDMA/qDMA will be clock gated to save more power. Signed-off-by: Zhuoyu Zhang <Zhuoyu.Zhang@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
19 lines
286 B
C
19 lines
286 B
C
/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __FSL_DEVDIS_H_
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#define __FSL_DEVDIS_H_
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struct devdis_table {
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char name[32];
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u32 offset;
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u32 mask;
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};
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void device_disable(const struct devdis_table *tbl, uint32_t num);
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#endif
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