Yes, I'd like to submit it to mainline.For 32MB spi flash, The mt7620a soc
switch to 32bit address mode.After a soft reset, the spi flash should switch to
24bit back, otherwise the rourer would hang until you do a hard reset.
------------------ 原始邮件 ------------------
发件人: "Rafał Miłecki";<[email protected]>;
发送时间: 2015年11月9日(星期一) 凌晨5:25
收件人: "未命名"<[email protected]>;
抄送: "OpenWrt Development List"<[email protected]>;
主题: Re: [OpenWrt-Devel] [PATCH] ramips: reset m25p80 when shutdown
On 7 November 2015 at 21:42, Shonn Lu <[email protected]> wrote:
> Signed-off-by: Shonn Lu <[email protected]>
> ---
> .../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,
What's the point with that "play4fun" something? Please describe this
patch better, explain why it is needed. Did you try to submit this
patch to mainline?
--
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