ar71xx: enable fast flash read on dual-flash devices

This improves flash read speed on various Buffalo units.

mtd_speedtest results on the WZR-HP-AG300H:

                          old         new        delta
eraseblock read speed:  726 KiB/s   2068 KiB/s   +184.85%
page read speed:        699 KiB/s   1973 KiB/s   +182.26%
2 page read speed:      711 KiB/s   2043 KiB/s   +187.34%

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35392 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-m25p80.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-m25p80.c
index 66115b1..9323b31 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-m25p80.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-m25p80.c
@@ -113,5 +113,6 @@ void __init ath79_register_m25p80_multi(struct flash_platform_data *pdata)
        add_mtd_concat_notifier();
        ath79_spi_data.bus_num = 0;
        ath79_spi_data.num_chipselect = 2;
+       ath79_spi0_cdata.is_flash = true;
        ath79_register_spi(&ath79_spi_data, ath79_spi_info, 2);
 }