From: Jagan Teki <jagan@amarulasolutions.com>
To: Kever Yang <kever.yang@rock-chips.com>
Cc: U-Boot-Denx <u-boot@lists.denx.de>,
linux-amarula <linux-amarula@amarulasolutions.com>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip@lists.infradead.org>
Subject: Re: [PATCH 01/11] spi: rk: Limit transfers to (64K - 1) bytes
Date: Fri, 27 Dec 2019 11:25:03 +0530 [thread overview]
Message-ID: <CAMty3ZDNLNRue1OFAvPvo5oxJDwhLinA5GCSJJ7kwc08TOvdXA@mail.gmail.com> (raw)
In-Reply-To: <9bec6335-455b-0c62-a68d-a470a3ccdc24@rock-chips.com>
On Mon, Dec 23, 2019 at 8:00 AM Kever Yang <kever.yang@rock-chips.com> wrote:
>
>
> On 2019/12/21 下午3:54, Jagan Teki wrote:
> > The Rockchip SPI controller's length register only supports 16-bits,
> > yielding a maximum length of 64KiB (the CTRLR1 register holds "length -
> > 1"). Trying to transfer more than that (e.g., with a large SPI flash
> > read) will cause the driver to hang.
> >
> > Now, it seems that while theoretically we should be able to program
> > CTRLR1 with 0xffff, and get a 64KiB transfer, but that also seems to
> > cause the core to choke, so stick with a maximum of 64K - 1 bytes --
> > i.e., 0xffff.
> >
> > Note, that the size is further divided into 'minus 1' while writing
> > into CTRLR1.
> >
> > This change fixed two different read issues,
> >
> > 1. sf read failure when with > 0x10000
> >
> > 2. Boot from SPI flash failed during spi_flash_read call in
> > common/spl/spl_spi.c
> >
> > Observed and Tested in
> > - Rockpro64 with Gigadevice flash
> > - ROC-RK3399-PC with Winbond flash
> >
> > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
>
> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Applied to u-boot-spi/master
next prev parent reply other threads:[~2019-12-27 5:55 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-21 7:54 [PATCH 00/11] rk3399: SPI boot support (fixes, updates) Jagan Teki
[not found] ` <20191221075440.6944-1-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-21 7:54 ` [PATCH 01/11] spi: rk: Limit transfers to (64K - 1) bytes Jagan Teki
[not found] ` <20191221075440.6944-2-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-23 2:30 ` Kever Yang
2019-12-27 5:55 ` Jagan Teki [this message]
2019-12-21 7:54 ` [PATCH 02/11] distro_bootcmd: Add SF support Jagan Teki
2019-12-30 3:07 ` Kever Yang
2020-01-20 17:22 ` Tom Rini
2020-01-20 17:40 ` Alexander Graf
2020-01-23 16:55 ` Jagan Teki
2020-01-23 17:03 ` Tom Rini
2020-01-23 17:11 ` Jagan Teki
2020-01-23 17:15 ` Tom Rini
2020-01-23 17:29 ` Jagan Teki
2020-01-23 17:59 ` Tom Rini
2019-12-21 7:54 ` [PATCH 03/11] rockchip: Include SF on distrocmd devices Jagan Teki
[not found] ` <20191221075440.6944-4-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:07 ` Kever Yang
2020-01-07 8:44 ` Kever Yang
2019-12-21 7:54 ` [PATCH 04/11] rk3399: Add boot flash script offet, size Jagan Teki
2019-12-30 3:06 ` Kever Yang
2019-12-21 7:54 ` [PATCH 05/11] rk3399: Check MMC env while defining it Jagan Teki
2019-12-30 3:06 ` Kever Yang
2019-12-21 7:54 ` [PATCH 06/11] env: kconfig: Restrict rockchip env for MMC Jagan Teki
2019-12-30 3:05 ` Kever Yang
2019-12-21 7:54 ` [PATCH 07/11] env: Enable SPI flash env for rockchip Jagan Teki
2019-12-23 2:34 ` Kever Yang
2019-12-27 6:50 ` Jagan Teki
2019-12-27 10:02 ` Kever Yang
2019-12-27 10:10 ` Jagan Teki
2019-12-27 10:30 ` Soeren Moch
2019-12-27 12:04 ` Jagan Teki
2019-12-27 13:19 ` Soeren Moch
[not found] ` <30fdf54b-0f71-ffbf-ac57-51050a29b56d-S0/GAf8tV78@public.gmane.org>
2019-12-28 12:08 ` Jagan Teki
2019-12-30 9:04 ` Soeren Moch
2019-12-30 2:59 ` Kever Yang
2019-12-21 7:54 ` [PATCH 08/11] rockchip: dts: Sync ROC-RK3399-PC changes from Linux Jagan Teki
[not found] ` <20191221075440.6944-9-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:00 ` Kever Yang
2019-12-21 7:54 ` [PATCH 09/11] roc-pc-rk3399: Enable SPI Flash Jagan Teki
[not found] ` <20191221075440.6944-10-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 3:00 ` Kever Yang
2019-12-21 7:54 ` [PATCH 10/11] rockpro-rk3399: " Jagan Teki
2019-12-30 3:00 ` Kever Yang
[not found] ` <20191221075440.6944-11-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
2019-12-30 11:51 ` Emmanuel Vadot
2020-01-08 12:59 ` Jagan Teki
2019-12-21 7:54 ` [PATCH 11/11] roc-rk3399-pc: Add SPI boot support Jagan Teki
2019-12-30 3:05 ` Kever Yang
2019-12-30 7:52 ` Jagan Teki
[not found] ` <CAMty3ZA1u3-21QN4N6W=9Sq3n493BBBB2W_FzAEQC9aze4SoMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-01-07 8:53 ` Kever Yang
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