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| author | Zhuoyu Zhang <Zhuoyu.Zhang@freescale.com> | 2015-08-17 18:55:12 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-09-01 21:49:20 -0500 |
| commit | 03c22449c5b7daff0a43291b34564a52660b83b8 (patch) | |
| tree | 5925e5f7cbbcc63e89d40674300b635936d1b94a /board | |
| parent | ec93af0dec4c9f17cefadd24d54edf5c5b91bc8d (diff) | |
| download | u-boot-imx-03c22449c5b7daff0a43291b34564a52660b83b8.zip u-boot-imx-03c22449c5b7daff0a43291b34564a52660b83b8.tar.gz u-boot-imx-03c22449c5b7daff0a43291b34564a52660b83b8.tar.bz2 | |
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>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/ls1021aqds/ls1021aqds.c | 5 | ||||
| -rw-r--r-- | board/freescale/ls1021atwr/ls1021atwr.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c index e585380..655fc64 100644 --- a/board/freescale/ls1021aqds/ls1021aqds.c +++ b/board/freescale/ls1021aqds/ls1021aqds.c @@ -12,12 +12,14 @@ #include <asm/arch/clock.h> #include <asm/arch/fsl_serdes.h> #include <asm/arch/ls102xa_stream_id.h> +#include <asm/arch/ls102xa_devdis.h> #include <hwconfig.h> #include <mmc.h> #include <fsl_esdhc.h> #include <fsl_ifc.h> #include <fsl_sec.h> #include <spl.h> +#include <fsl_devdis.h> #include "../common/sleep.h" #include "../common/qixis.h" @@ -531,6 +533,9 @@ int misc_init_r(void) else if (hwconfig("sdhc")) config_board_mux(MUX_TYPE_SDHC); +#ifdef CONFIG_FSL_DEVICE_DISABLE + device_disable(devdis_tbl, ARRAY_SIZE(devdis_tbl)); +#endif #ifdef CONFIG_FSL_CAAM return sec_init(); #endif diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c index 006700f..228dbf8 100644 --- a/board/freescale/ls1021atwr/ls1021atwr.c +++ b/board/freescale/ls1021atwr/ls1021atwr.c @@ -12,6 +12,7 @@ #include <asm/arch/clock.h> #include <asm/arch/fsl_serdes.h> #include <asm/arch/ls102xa_stream_id.h> +#include <asm/arch/ls102xa_devdis.h> #include <hwconfig.h> #include <mmc.h> #include <fsl_esdhc.h> @@ -21,6 +22,7 @@ #include <fsl_mdio.h> #include <tsec.h> #include <fsl_sec.h> +#include <fsl_devdis.h> #include <spl.h> #include "../common/sleep.h" #ifdef CONFIG_U_QE @@ -652,6 +654,9 @@ int board_init(void) #if defined(CONFIG_MISC_INIT_R) int misc_init_r(void) { +#ifdef CONFIG_FSL_DEVICE_DISABLE + device_disable(devdis_tbl, ARRAY_SIZE(devdis_tbl)); +#endif #ifndef CONFIG_QSPI_BOOT config_board_mux(); #endif |