u-boot/include/fsl_devdis.h
Zhuoyu Zhang 03c22449c5 arm/ls102xa:add hwconfig setting to support disable unused devices
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>
2015-09-01 21:49:20 -05:00

19 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