[OpenWrt-Devel] [PATCH] ramips: reset m25p80 when shutdown

[Shonn Lu]

Signed-off-by: Shonn Lu <countrysideboy at qq.com>
---
 .../0064-reset-m25p80-when-shutdown.patch          | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 target/linux/ramips/patches-3.18/0064-reset-m25p80-when-shutdown.patch

diff --git a/target/linux/ramips/patches-3.18/0064-reset-m25p80-when-shutdown.patch b/target/linux/ramips/patches-3.18/0064-reset-m25p80-when-shutdown.patch
new file mode 100644
index 0000000..76f916a
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0064-reset-m25p80-when-shutdown.patch
@@ -0,0 +1,24 @@
+--- a/drivers/mtd/devices/m25p80.c
++++ b/drivers/mtd/devices/m25p80.c
+@@ -319,6 +319,12 @@
+ {
+ 	struct m25p	*flash = spi_get_drvdata(spi);
+ 
++    //	play4fun: add spi flash reset code  
++	flash->command[0] = 0x66;  
++	spi_write(flash->spi, flash->command, 1);  
++	flash->command[0] = 0x99;  
++	spi_write(flash->spi, flash->command, 1);
++ 
+ 	/* Clean up MTD stuff. */
+ 	return mtd_device_unregister(&flash->mtd);
+ }
+@@ -382,6 +388,8 @@
+ 	.id_table	= m25p_ids,
+ 	.probe	= m25p_probe,
+ 	.remove	= m25p_remove,
++	//	play4fun add shutdown method to reset spi flash
++	.shutdown = m25p_remove,
+ 
+ 	/* REVISIT: many of these chips have deep power-down modes, which
+ 	 * should clearly be entered on suspend() to minimize power use.
-- 
1.9.1
_______________________________________________
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel