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authorZhuoyu Zhang <Zhuoyu.Zhang@freescale.com>2015-08-17 18:55:12 +0800
committerYork Sun <yorksun@freescale.com>2015-09-01 21:49:20 -0500
commit03c22449c5b7daff0a43291b34564a52660b83b8 (patch)
tree5925e5f7cbbcc63e89d40674300b635936d1b94a /include/configs/ls1021aqds.h
parentec93af0dec4c9f17cefadd24d54edf5c5b91bc8d (diff)
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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 'include/configs/ls1021aqds.h')
-rw-r--r--include/configs/ls1021aqds.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index dfaffa1..b44f326 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -566,7 +566,9 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_TIMER_CLK_FREQ 12500000
#define CONFIG_HWCONFIG
-#define HWCONFIG_BUFFER_SIZE 128
+#define HWCONFIG_BUFFER_SIZE 256
+
+#define CONFIG_FSL_DEVICE_DISABLE
#define CONFIG_BOOTDELAY 3