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Message-ID: <Y1K7hWKl0siEtaAl@gmail.com>
Date: Fri, 21 Oct 2022 17:32:21 +0200
From: Marcus Folkesson <marcus.folkesson@...il.com>
To: Mitja Spes <mitja@...av.com>
Cc: Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Lee Jones <lee.jones@...aro.org>,
Mark Brown <broonie@...nel.org>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>,
Tomasz Duszynski <tduszyns@...il.com>,
linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] iio: pressure: ms5611: changed hardcoded SPI
speed to value limited
Hi Mitja,
On Fri, Oct 21, 2022 at 03:58:21PM +0200, Mitja Spes wrote:
> Don't hardcode the ms5611 SPI speed, limit it instead.
>
> Signed-off-by: Mitja Spes <mitja@...av.com>
> ---
> drivers/iio/pressure/ms5611_spi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c
> index 432e912096f4..a0a7205c9c3a 100644
> --- a/drivers/iio/pressure/ms5611_spi.c
> +++ b/drivers/iio/pressure/ms5611_spi.c
> @@ -91,7 +91,7 @@ static int ms5611_spi_probe(struct spi_device *spi)
> spi_set_drvdata(spi, indio_dev);
>
> spi->mode = SPI_MODE_0;
> - spi->max_speed_hz = 20000000;
> + spi->max_speed_hz = min(spi->max_speed_hz, 20000000U);
max_speed_hz is a limit, and the max frequency the ms5611 support is
20MHz.
Best regards,
Marcus Folkesson
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