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Fri, 21 Aug 2020 16:14:07 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Andi Shyti , Mark Brown , linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Date: Fri, 21 Aug 2020 18:13:59 +0200 Message-Id: <20200821161401.11307-8-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200821161401.11307-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA02SfSyUcRzA+91zz3OPm+NxbL5Jtd2yOhuK2LN5N39c/5Q/arUSDk/OuKM7 RNMIRXphzPK2RbTDvOcurFg3y1tcaXnXEiVKzUvzMiN3j5b/Pt/v7/N9+f32IzFhG25DRiri GKVCGi0i+Fztmw29g37ZO/hk4biYrlif49BNhQ04XTA9S9A5Mz8wWq9v5NFjuipEN88M4/SH 9lKCLtR3cOjbS2M8uq5rikev3NkmfEwlJanvuZKRymVM0lxzj5A8r0yRPGqpQZKV5iMBxGW+ RzgTHZnAKJ28Qvgy7dx3XmwTkThfbZ2KKvBsRJJAnQZdpnM24pNCqgpBwZAaZ4NVBL9HP/Oy kclusIKgujXEwIaC3oG1PUmN4M9iG8EGcwj6OjOMFQTlCznPeoyWFZXLgenBn0YLo4oQbBRV cAyWJXUBshvf4gbmUnawsFNGGFhAuUOWph1j5x2FTPULY96E8oDuoTScdSygt2iWa2Bzyh5q 00aMjO366ZoSzDAMqHEefJtfw9lG/tClqeOwbAkL3S08lm1hp+0Jh32NFMjPc2NrHyDQlq5z WccdJgc3CYODUWJoaHdidV9Q5/qzaAajixbsBmaQp32MsWkBZN0Vsj2OQX3Oy71+NvBwoQrl IlHxvrsU79u/+P+oMoTVIGsmXiWPYFTOCuaGo0oqV8UrIhzDYuTNaPdD9W93r7ai9q1QHaJI JDIVrOu8g4W4NEGVJNchIDGRlcBvoD9IKAiXJt1klDHByvhoRqVDh0iuyFrg8nT+qpCKkMYx UQwTyyj/nXJIE5tUxB/qPevuds5WnDzuF1Tusn0/yuFE0fG1ua+JC0GeKYdzpH3vrAM7k880 OCu90jr6Pl2fTG+ql/06f4ks3nTqDOxxFauXprZcw8d8ljTx1woYt4kMO1ToeTAgNOz1yKth mUXtR47zaHmDFvviOSG5JRMnc/Nrr2jNHS62ph/QdShEXJVMesoeU6qkfwFoGQ2ZTAMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7rnP9nHGxxrEbVY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW3xu/cfm wOMxu+Eii8f1JZ+YPTat6mTz2Lyk3qNvyypGj8+b5ALYovRsivJLS1IVMvKLS2yVog0tjPQM LS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/TtEvQytj1/wV6wka3i5UrxBsbFrF2MnBwSAiYS J89+B7K5OIQEljJKfPyymbmLkQMoISWxcm46RI2wxJ9rXWwgtpDAU0aJf81FIDabgKNE/9IT YL0iAjOYJJ7cmAzmMAvMZpTo/9HMAlIlLBAsMengXkYQm0VAVeLV/wVgk3gFrCU6tu5ihtgg L9G+fDtYnFPARuL4pSZWiG3WEtsWX2aBqBeUODnzCQvIccwC6hLr5wmBhPkFtCTWNF0HK2EG GtO8dTbzBEahWUg6ZiF0zEJStYCReRWjSGppcW56brGhXnFibnFpXrpecn7uJkZgRG479nPz DsZLG4MPMQpwMCrx8P44ZB8vxJpYVlyZe4hRgoNZSYTX6ezpOCHelMTKqtSi/Pii0pzU4kOM pkBvTmSWEk3OByaLvJJ4Q1NDcwtLQ3Njc2MzCyVx3g6BgzFCAumJJanZqakFqUUwfUwcnFIN jBbdB+VM//bwN3P3b9L7qrb34r2tDVprt2b3y4TpWR81vPpnnb/epnsTLV3rXAp3VwoeLDt5 wTvr03WXQzu+rdz7375JuTR2X33lidntntcCny1PEvT7umHis1t3/byiGw9Y3nWP+7Tyydl0 Q+XMN/V/T8z6FPts7noZy44qk2gvTiaXDzaTw5VYijMSDbWYi4oTAcS6UfjeAgAA X-CMS-MailID: 20200821161407eucas1p249e4833b8839f717cc2a496ab43bb8a2 X-Msg-Generator: CA X-RootMTR: 20200821161407eucas1p249e4833b8839f717cc2a496ab43bb8a2 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200821161407eucas1p249e4833b8839f717cc2a496ab43bb8a2 References: <20200821161401.11307-1-l.stelmach@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200821_121409_293120_8E1910C9 X-CRM114-Status: GOOD ( 15.56 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [210.118.77.12 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.12 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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: b.zolnierkie@samsung.com, =?utf-8?q?=C5=81ukasz_Stelmach?= , Tomasz Figa , m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org cur_speed is used to calculate transfer timeout and needs to be set to the actual value of (half) the clock speed for precise calculations. Cc: Tomasz Figa Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 02de734b8ab1..89c162efe355 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -626,6 +626,7 @@ static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) ret = clk_set_rate(sdd->src_clk, sdd->cur_speed * 2); if (ret) return ret; + sdd->cur_speed = clk_get_rate(sdd->src_clk) / 2; } else { /* Configure Clock */ val = readl(regs + S3C64XX_SPI_CLK_CFG);