From: Carlo Caione <carlo@caione.org>
To: neil.armstrong@linaro.org,
Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>,
Mark Brown <broonie@kernel.org>,
Jerome Brunet <jbrunet@baylibre.com>,
David Airlie <airlied@gmail.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Kevin Hilman <khilman@baylibre.com>,
Daniel Vetter <daniel@ffwll.ch>
Cc: linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-spi@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 3/3] spi: meson-spicc: Lower CS between bursts
Date: Thu, 17 Nov 2022 15:05:34 +0100 [thread overview]
Message-ID: <3bfffc60-a4d3-ddc2-7811-f0fbec22ba65@baylibre.com> (raw)
In-Reply-To: <098b923b-ff46-5ef5-9c21-19c974c9274f@linaro.org>
On 17/11/2022 09:54, Neil Armstrong wrote:
> I'm afraid this will actually break SPI NORs for example where CS
> actually splits transactions.
>
> Isn't Amjad change enough ? The CLK pull-up should avoid this.
It looks like it is not enough unfortunately.
> If it's not the case, then it's an HW issue and the CLK line pull-up
> is too weak and an external pull should then be added.
Alright, I'll drop this patch in the next respin if needed.
Thanks,
--
Carlo Caione
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next prev parent reply other threads:[~2022-11-17 14:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-17 8:47 [PATCH 0/3] Fix SPICC and ILI9486 drivers Carlo Caione
2022-11-17 8:47 ` [PATCH 1/3] drm/tiny: rpi-lcd-35: Enable driver module autoloading Carlo Caione
2022-11-17 8:47 ` [PATCH 2/3] drm/tiny: ili9486: Do not assume 8-bit only SPI controllers Carlo Caione
2022-11-17 11:09 ` Mark Brown
2022-11-17 13:40 ` Carlo Caione
2022-11-17 14:59 ` Mark Brown
2022-11-18 10:36 ` Carlo Caione
2022-11-18 15:44 ` Mark Brown
2022-11-18 19:02 ` Carlo Caione
2022-11-17 8:47 ` [PATCH 3/3] spi: meson-spicc: Lower CS between bursts Carlo Caione
2022-11-17 8:54 ` Neil Armstrong
2022-11-17 14:05 ` Carlo Caione [this message]
2022-11-17 10:59 ` Mark Brown
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