From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Linux-Renesas <linux-renesas-soc@vger.kernel.org>
Subject: Re: [RFC PATCH 4/4] arm64: dts: renesas: falcon-cpu: add SPI flash via RPC
Date: Thu, 23 Sep 2021 11:02:45 +0200 [thread overview]
Message-ID: <CAMuHMdVb9Jr=AVXdE-_N3_6SS6E8K-mFvQzSuXNhXDmEyhgqYw@mail.gmail.com> (raw)
In-Reply-To: <20210913065317.2297-5-wsa+renesas@sang-engineering.com>
On Mon, Sep 13, 2021 at 8:53 AM Wolfram Sang
<wsa+renesas@sang-engineering.com> wrote:
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Comments: The BSP used 40 MHz as the spi-max-frequency. But it is the
> same SPI flash chip as on other R-Car Gen3 boards, so I took the max
> value from there, 50MHz. It worked so far.
There could be a trace spec violation causing possible corruption at 50 MHz.
I think it would be best to verify this with Renesas.
> Probably the boot partition could be described more precisely and split
> up into further partitions. Do we want that? So far, I kept what the BSP
> is using.
It depends: what do you see on the board you're testing on?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2021-09-23 9:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 6:53 [RFC PATCH 0/4] r8a779a0: add RPC support Wolfram Sang
2021-09-13 6:53 ` [RFC PATCH 1/4] clk: renesas: cpg-lib: move RPC clock registration to the library Wolfram Sang
2021-09-23 8:26 ` Geert Uytterhoeven
2021-09-13 6:53 ` [RFC PATCH 2/4] clk: renesas: r8a779a0: Add RPC support Wolfram Sang
2021-09-23 8:37 ` Geert Uytterhoeven
2021-09-13 6:53 ` [RFC PATCH 3/4] arm64: dts: renesas: r8a779a0: Add RPC node Wolfram Sang
2021-09-23 8:56 ` Geert Uytterhoeven
2021-09-13 6:53 ` [RFC PATCH 4/4] arm64: dts: renesas: falcon-cpu: add SPI flash via RPC Wolfram Sang
2021-09-23 9:02 ` Geert Uytterhoeven [this message]
2021-09-28 9:26 ` Geert Uytterhoeven
2021-09-28 9:39 ` Wolfram Sang
2021-09-28 9:45 ` Geert Uytterhoeven
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