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Wed, 19 Aug 2020 13:01:21 +0000 (GMT) From: Lukasz Stelmach To: Krzysztof Kozlowski Subject: Re: [PATCH 2/8] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Date: Wed, 19 Aug 2020 15:01:21 +0200 In-Reply-To: <20200819123914.GC18122@kozik-lap> (Krzysztof Kozlowski's message of "Wed, 19 Aug 2020 14:39:14 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrPKsWRmVeSWpSXmKPExsWy7djPc7qLlGzjDU6elrNY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C02Pb7GanF51xw2ixnn9zFZNH68yW6x9shddgcuj+tLPjF7bFrV yeaxeUm9R9+WVYwenzfJBbBGcdmkpOZklqUW6dslcGU8nLCfuWCaQMX1ra2sDYxPebsYOTkk BEwkFhzvZOpi5OIQEljBKHHt9wp2COcLo8TDts9Qmc+MElPufWKEaVl/fzU7iC0ksJxR4tLd JIii54wSx04fZOli5OBgE9CTWLs2AqRGREBT4vrf76wgNcwCy5kklt5uBBskLBApcXv5BBYQ m0VAVWLG0z2sIDanQJnErbmXwebwCphLrFkKtktUwFJiy4v7YDavgKDEyZlPwFqZBXIlZp5/ wwgyX0LgHrvExvtnWCAOdZE4Nvk3E4QtLPHq+BZ2CFtG4v/O+Uwg8yUE6iUmTzKD6O1hlNg2 5wdUr7XEnXO/2CBsR4kld/qZIer5JG68FYTYyycxadt0qDCvREebEES1isS6/j1QU6Qkel+t YIQo8ZB4cFEOElJNjBIrjs5jnMCoMAvJN7OQfDMLqIUZGHLrd+lDhLUlli18zQxh20qsW/ee ZQEj6ypG8dTS4tz01GLjvNRyveLE3OLSvHS95PzcTYzApHX63/GvOxj3/Uk6xCjAwajEwxsA TGZCrIllxZW5hxhVgCY92rD6AqMUS15+XqqSCK/T2dNxQrwpiZVVqUX58UWlOanFhxilOViU xHmNF72MFRJITyxJzU5NLUgtgskycXBKNTDmC6ybF/WOy+630qMPqe8Etx+/MIl13q3aGY33 dl17xnwnMZHFdcqXA212PJ0rlj0Wq+ieKXaO4fqCpu3rn/NzC1z+cuTTxMIj77bXqttph9X6 djXrWBxXTnvimXgvNFDc66XpZtekwp8Cuf2RO03O/mJZu8DI2lxJqYRlS9CTeWlG7nWWweeV WIozEg21mIuKEwEdOVjMYgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrOIsWRmVeSWpSXmKPExsVy+t/xe7qLlGzjDbYuY7FY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C02Pb7GanF51xw2ixnn9zFZNH68yW6x9shddgcuj+tLPjF7bFrV yeaxeUm9R9+WVYwenzfJBbBG6dkU5ZeWpCpk5BeX2CpFG1oY6RlaWugZmVjqGRqbx1oZmSrp 29mkpOZklqUW6dsl6GU8nLCfuWCaQMX1ra2sDYxPebsYOTkkBEwk1t9fzd7FyMUhJLCUUeL7 zf2sXYwcQAkpiZVz0yFqhCX+XOtig6h5yijx59g0JpAaNgE9ibVrI0BqRAQ0Ja7//c4KYjML zGeS+P3LA8QWFgiX+H14FQuILQRUPv3QdmYQm0VAVWLG0z1g9ZwCZRJvFu9nBBnJK2AusWYp O0hYVMBSYsuL+2A2r4CgxMmZT1ggxmdLfF39nHkCo8AsJKlZSFKzgCYxA120fpc+RFhbYtnC 18wQtq3EunXvWRYwsq5iFEktLc5Nzy020itOzC0uzUvXS87P3cQIjLhtx35u2cHY9S74EKMA B6MSD28AMBKFWBPLiitzDzGqAI15tGH1BUYplrz8vFQlEV6ns6fjhHhTEiurUovy44tKc1KL DzGaAr05kVlKNDkfmCTySuINTQ3NLSwNzY3Njc0slMR5OwQOxggJpCeWpGanphakFsH0MXFw SjUwrp9j2xRoF7uOoZ2vaL3dRF8v16zFng8/P3G1UDlfktk3o5bT7VTPv7rZ3x9ttjulfZb/ R5uUbcKLgosL4jWDgu/k/bhsksbmeGiGTcJE16eGWr2fV7aoXNvamMXe5/tFzN4sr9RsYuuD fR8PSd88vtRJuUUx+foG+x+X+0MfHhD8JubZ5nlEiaU4I9FQi7moOBEAwF0khtoCAAA= X-CMS-MailID: 20200819130122eucas1p27e9e84c4399d01409858de6d01e11b52 X-Msg-Generator: CA X-RootMTR: 20200819130122eucas1p27e9e84c4399d01409858de6d01e11b52 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200819130122eucas1p27e9e84c4399d01409858de6d01e11b52 References: <20200819123914.GC18122@kozik-lap> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200819_090124_779459_5DF7BE7D X-CRM114-Status: GOOD ( 22.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-samsung-soc@vger.kernel.org, b.zolnierkie@samsung.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, Mark Brown , Kukjin Kim , Andi Shyti , linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com Content-Type: multipart/mixed; boundary="===============2319206049664997087==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============2319206049664997087== Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha256"; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable It was <2020-08-19 =C5=9Bro 14:39>, when Krzysztof Kozlowski wrote: > On Wed, Aug 19, 2020 at 02:32:02PM +0200, =C5=81ukasz Stelmach wrote: >> Signed-off-by: =C5=81ukasz Stelmach > > Add a quirk - why? Because stuff does not work without it and works with it and it is turned on for other SoCs which have simmilar SPI HW. > There is here no commit msg, no explanation. As I wrote in the cover letter, this and previous commits make things work on Exynos3250 (ARTIK5 precisely). I can't explain why. I read everything I could about this HW and there were no details about automatic CS handling other than how to turn it on and off. >> --- >> drivers/spi/spi-s3c64xx.c | 1 + >> 1 file changed, 1 insertion(+) >>=20 >> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c >> index fb5e2ba4b6b9..8fe44451d303 100644 >> --- a/drivers/spi/spi-s3c64xx.c >> +++ b/drivers/spi/spi-s3c64xx.c >> @@ -1372,6 +1372,7 @@ static struct s3c64xx_spi_port_config exynos4_spi_= port_config =3D { >> .tx_st_done =3D 25, >> .high_speed =3D true, >> .clk_from_cmu =3D true, >> + .quirks =3D S3C64XX_SPI_QUIRK_CS_AUTO, >> }; >>=20=20 >> static struct s3c64xx_spi_port_config exynos7_spi_port_config =3D { >> --=20 >> 2.26.2 >>=20 > =2D-=20 =C5=81ukasz Stelmach Samsung R&D Institute Poland Samsung Electronics --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEXpuyqjq9kGEVr9UQsK4enJilgBAFAl89IqEACgkQsK4enJil gBCBgggAmzKJKZjdcN7psbd+tfozf4RjlgvWg2EeHyNvQREmFtsdVidvErwvxxAI WSIyLq1cJhTyCTRobYsy/4kg3N/NCODTDDC/iNMUS60jwsbxuPL6qnmXkmNc1Ta/ R/BYT2QxwlYQW5p+qMjnBVHYpVvXqy/SYTqyGnGyykMc9R6l0TXIMCH2yaNMCCLY bKuz8oomOfEXnVXsK9dx8f70k2L/My2k1eHMK21HM/zkXeEQCijMVlpiaa1NWrBT HkMgoGlgIZF+zE73k1/D+8H6kJUqfck70kcs7dhpWJie+a5qyQeORBgpe8sC/gLH Ub1gRspukoIDB2QpiJv88dtGMKeOTg== =FjbC -----END PGP SIGNATURE----- --=-=-=-- --===============2319206049664997087== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============2319206049664997087==--