mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
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>
18 lines
286 B
C
18 lines
286 B
C
/*
|
|
* Copyright 2015 Freescale Semiconductor, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __FSL_DEVDIS_H_
|
|
#define __FSL_DEVDIS_H_
|
|
|
|
struct devdis_table {
|
|
char name[32];
|
|
u32 offset;
|
|
u32 mask;
|
|
};
|
|
|
|
void device_disable(const struct devdis_table *tbl, uint32_t num);
|
|
|
|
#endif
|