From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9F9F8CA0EEB for ; Fri, 22 Aug 2025 06:19:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aTr4JiZNkK5fFHU1sv82qB/wpWeQzQKMrdVhHb6Ci/w=; b=IdhOtD4C47d0wxIs9jCwRtSLrw 6FtNXVXj3D47xFACwz5rmIMfEmhxSlGnGvkqjVI9d8At36cIRlZC6NHwePifoR1hJpXODJB3DF5Zt 6tAMrDR6Vd1y3x8C0VxwVV2gR03tCgQcA541EtbQlNB+7tXNZh+QIbyI9Eh6mecViTtKYnGtNjXPi /HXgLSjJqTJlq0cC+djkXZMm4EYafaIPwnTSChrKxKb5xkY0s4LYs1aZlb466oRgieILrTtDbVxc6 3XyFnfdUZNBpr9HFZJBkU2B3XJw2/LcaoTvr7BHZdJVm+eN6ic2pycNUFyGEYD0gEwMKyp35CLOjE 7IwhNexw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1upL7D-00000001g3t-3EpT; Fri, 22 Aug 2025 06:19:08 +0000 Received: from mgamail.intel.com ([192.198.163.15]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1upCqJ-00000000fEZ-3ZuM; Thu, 21 Aug 2025 21:29:09 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1755811748; x=1787347748; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=GrR4bZtSzHvF2nyvCTmyXxhSUd2f7AHIaQh0d8oCmy0=; b=KX66S5X9YzTLAaxj7tHgnkfR4NXyh2p380MVqm2cIj6AS+FB7T2kXiCt zJUJUkRRi9+MA8Q+5/1GE/TvQKE/JIG3GNw9EnO8ozYnPmkpz+nCWTCNx Atd+JjU9M/1pm/Hx8PsrOO1RBw/7iB1FOPcWwjdBQsVTaK/CoGAarS3jn p0CILcdPLJ9jX/PhWjnK1j5GJw3V8b4RSRNoI4gO6yHXSRA808dTQrkHZ PbJN4SOaIokybFwtPqRvNWMxQOhf8hAM92JgV+qNNDRCKduyZ6UKQISQ3 roJ2wYyz5DCH2zO3diXwiK4M3t4Iy8bWaKOwocI8p6Zp1wzddaupgfn8t g==; X-CSE-ConnectionGUID: 1W94uxVLTe2bDoErD1LlFg== X-CSE-MsgGUID: mCn5GNS/Q1CbwlLx08sJBg== X-IronPort-AV: E=McAfee;i="6800,10657,11529"; a="58211822" X-IronPort-AV: E=Sophos;i="6.17,309,1747724400"; d="scan'208";a="58211822" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2025 14:29:04 -0700 X-CSE-ConnectionGUID: gKLChN3FSmS9FPg4KxPt5g== X-CSE-MsgGUID: QjoNdbbBQACgALAV+CuSFQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,309,1747724400"; d="scan'208";a="172780491" Received: from lkp-server02.sh.intel.com (HELO 4ea60e6ab079) ([10.239.97.151]) by fmviesa005.fm.intel.com with ESMTP; 21 Aug 2025 14:28:58 -0700 Received: from kbuild by 4ea60e6ab079 with local (Exim 4.96) (envelope-from ) id 1upCq8-000KgN-1H; Thu, 21 Aug 2025 21:28:56 +0000 Date: Fri, 22 Aug 2025 05:28:14 +0800 From: kernel test robot To: Pritam Manohar Sutar , vkoul@kernel.org, kishon@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, alim.akhtar@samsung.com, andre.draszik@linaro.org, peter.griffin@linaro.org, kauschluss@disroot.org, ivo.ivanov.ivanov1@gmail.com, igor.belwon@mentallysanemainliners.org, johan@kernel.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com Cc: oe-kbuild-all@lists.linux.dev, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, rosa.pila@samsung.com, dev.tailor@samsung.com, faraz.ata@samsung.com, muhammed.ali@samsung.com, selvarasu.g@samsung.com Subject: Re: [PATCH v6 6/6] phy: exynos5-usbdrd: support SS combo phy for ExynosAutov920 Message-ID: <202508220553.lm7ExAxG-lkp@intel.com> References: <20250821073703.2498302-7-pritam.sutar@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250821073703.2498302-7-pritam.sutar@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250821_142907_935058_12F9067F X-CRM114-Status: GOOD ( 16.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Pritam, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on krzk/for-next linus/master v6.17-rc2 next-20250821] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Pritam-Manohar-Sutar/dt-bindings-phy-samsung-usb3-drd-phy-add-ExynosAutov920-HS-phy-compatible/20250821-153122 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250821073703.2498302-7-pritam.sutar%40samsung.com patch subject: [PATCH v6 6/6] phy: exynos5-usbdrd: support SS combo phy for ExynosAutov920 config: arc-randconfig-001-20250822 (https://download.01.org/0day-ci/archive/20250822/202508220553.lm7ExAxG-lkp@intel.com/config) compiler: arc-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250822/202508220553.lm7ExAxG-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202508220553.lm7ExAxG-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynosautov920_usb31drd_cr_write': >> drivers/phy/samsung/phy-exynos5-usbdrd.c:2167:17: warning: unused variable 'dev' [-Wunused-variable] struct device *dev = phy_drd->dev; ^~~ drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynosautov920_usb31drd_port_phy_ready': >> drivers/phy/samsung/phy-exynos5-usbdrd.c:2137:6: warning: 'reg' is used uninitialized in this function [-Wuninitialized] reg &= ~(PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ during RTL pass: mach drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynos5_usbdrd_phy_probe': drivers/phy/samsung/phy-exynos5-usbdrd.c:3056:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110 } ^ Please submit a full bug report, with preprocessed source if appropriate. See for instructions. vim +/dev +2167 drivers/phy/samsung/phy-exynos5-usbdrd.c 2125 2126 static void 2127 exynosautov920_usb31drd_port_phy_ready(struct exynos5_usbdrd_phy *phy_drd) 2128 { 2129 struct device *dev = phy_drd->dev; 2130 void __iomem *reg_phy = phy_drd->reg_phy; 2131 static const unsigned int timeout_us = 20000; 2132 static const unsigned int sleep_us = 40; 2133 u32 reg; 2134 int err; 2135 2136 /* Clear cr_para_con */ > 2137 reg &= ~(PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | 2138 PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR); 2139 reg |= PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2140 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2141 writel(0x0, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON1); 2142 writel(0x0, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2143 2144 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2145 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2146 2147 /* 2148 * The maximum time from phy reset de-assertion to de-assertion of 2149 * tx/rx_ack can be as high as 5ms in fast simulation mode. 2150 * Time to phy ready is < 20ms 2151 */ 2152 err = readl_poll_timeout(reg_phy + 2153 EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0, 2154 reg, !(reg & PHY_CR_PARA_CON0_PHY0_CR_PARA_ACK), 2155 sleep_us, timeout_us); 2156 if (err) 2157 dev_err(dev, "timed out waiting for rx/tx_ack: %#.8x\n", reg); 2158 2159 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK; 2160 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2161 } 2162 2163 static void 2164 exynosautov920_usb31drd_cr_write(struct exynos5_usbdrd_phy *phy_drd, 2165 u16 addr, u16 data) 2166 { > 2167 struct device *dev = phy_drd->dev; 2168 void __iomem *reg_phy = phy_drd->reg_phy; 2169 u32 cnt = 0; 2170 u32 reg; 2171 2172 /* Pre Clocking */ 2173 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2174 reg |= PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2175 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2176 2177 /* 2178 * tx clks must be available prior to assertion of tx req. 2179 * tx pstate p2 to p0 transition directly is not permitted. 2180 * tx clk ready must be asserted synchronously on tx clk prior 2181 * to internal transmit clk alignment sequence in the phy 2182 * when entering from p2 to p1 to p0. 2183 */ 2184 do { 2185 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2186 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2187 cnt++; 2188 } while (cnt < 15); 2189 2190 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2191 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2192 2193 /* 2194 * tx data path is active when tx lane is in p0 state 2195 * and tx data en asserted. enable cr_para_wr_en. 2196 */ 2197 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2198 reg &= ~PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_DATA; 2199 reg |= FIELD_PREP(PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_DATA, data) | 2200 PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_EN; 2201 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2202 2203 /* write addr */ 2204 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2205 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR; 2206 reg |= FIELD_PREP(PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR, addr) | 2207 PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | 2208 PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2209 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2210 2211 /* check cr_para_ack*/ 2212 cnt = 0; 2213 do { 2214 /* 2215 * data symbols are captured by phy on rising edge of the 2216 * tx_clk when tx data enabled. 2217 * completion of the write cycle is acknowledged by assertion 2218 * of the cr_para_ack. 2219 */ 2220 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2221 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2222 if ((reg & PHY_CR_PARA_CON0_PHY0_CR_PARA_ACK)) 2223 break; 2224 2225 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2226 2227 /* 2228 * wait for minimum of 10 cr_para_clk cycles after phy reset 2229 * is negated, before accessing control regs to allow for 2230 * internal resets. 2231 */ 2232 cnt++; 2233 } while (cnt < 10); 2234 2235 if (cnt < 10) 2236 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2237 } 2238 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7C94CCA0EEB for ; 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d="scan'208";a="58211822" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2025 14:29:04 -0700 X-CSE-ConnectionGUID: gKLChN3FSmS9FPg4KxPt5g== X-CSE-MsgGUID: QjoNdbbBQACgALAV+CuSFQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,309,1747724400"; d="scan'208";a="172780491" Received: from lkp-server02.sh.intel.com (HELO 4ea60e6ab079) ([10.239.97.151]) by fmviesa005.fm.intel.com with ESMTP; 21 Aug 2025 14:28:58 -0700 Received: from kbuild by 4ea60e6ab079 with local (Exim 4.96) (envelope-from ) id 1upCq8-000KgN-1H; Thu, 21 Aug 2025 21:28:56 +0000 Date: Fri, 22 Aug 2025 05:28:14 +0800 From: kernel test robot To: Pritam Manohar Sutar , vkoul@kernel.org, kishon@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, alim.akhtar@samsung.com, andre.draszik@linaro.org, peter.griffin@linaro.org, kauschluss@disroot.org, ivo.ivanov.ivanov1@gmail.com, igor.belwon@mentallysanemainliners.org, johan@kernel.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com Cc: oe-kbuild-all@lists.linux.dev, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, rosa.pila@samsung.com, dev.tailor@samsung.com, faraz.ata@samsung.com, muhammed.ali@samsung.com, selvarasu.g@samsung.com Subject: Re: [PATCH v6 6/6] phy: exynos5-usbdrd: support SS combo phy for ExynosAutov920 Message-ID: <202508220553.lm7ExAxG-lkp@intel.com> References: <20250821073703.2498302-7-pritam.sutar@samsung.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20250821073703.2498302-7-pritam.sutar@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250821_142907_935058_12F9067F X-CRM114-Status: GOOD ( 16.42 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Hi Pritam, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on krzk/for-next linus/master v6.17-rc2 next-20250821] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Pritam-Manohar-Sutar/dt-bindings-phy-samsung-usb3-drd-phy-add-ExynosAutov920-HS-phy-compatible/20250821-153122 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250821073703.2498302-7-pritam.sutar%40samsung.com patch subject: [PATCH v6 6/6] phy: exynos5-usbdrd: support SS combo phy for ExynosAutov920 config: arc-randconfig-001-20250822 (https://download.01.org/0day-ci/archive/20250822/202508220553.lm7ExAxG-lkp@intel.com/config) compiler: arc-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250822/202508220553.lm7ExAxG-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202508220553.lm7ExAxG-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynosautov920_usb31drd_cr_write': >> drivers/phy/samsung/phy-exynos5-usbdrd.c:2167:17: warning: unused variable 'dev' [-Wunused-variable] struct device *dev = phy_drd->dev; ^~~ drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynosautov920_usb31drd_port_phy_ready': >> drivers/phy/samsung/phy-exynos5-usbdrd.c:2137:6: warning: 'reg' is used uninitialized in this function [-Wuninitialized] reg &= ~(PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ during RTL pass: mach drivers/phy/samsung/phy-exynos5-usbdrd.c: In function 'exynos5_usbdrd_phy_probe': drivers/phy/samsung/phy-exynos5-usbdrd.c:3056:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110 } ^ Please submit a full bug report, with preprocessed source if appropriate. See for instructions. vim +/dev +2167 drivers/phy/samsung/phy-exynos5-usbdrd.c 2125 2126 static void 2127 exynosautov920_usb31drd_port_phy_ready(struct exynos5_usbdrd_phy *phy_drd) 2128 { 2129 struct device *dev = phy_drd->dev; 2130 void __iomem *reg_phy = phy_drd->reg_phy; 2131 static const unsigned int timeout_us = 20000; 2132 static const unsigned int sleep_us = 40; 2133 u32 reg; 2134 int err; 2135 2136 /* Clear cr_para_con */ > 2137 reg &= ~(PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | 2138 PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR); 2139 reg |= PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2140 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2141 writel(0x0, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON1); 2142 writel(0x0, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2143 2144 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2145 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2146 2147 /* 2148 * The maximum time from phy reset de-assertion to de-assertion of 2149 * tx/rx_ack can be as high as 5ms in fast simulation mode. 2150 * Time to phy ready is < 20ms 2151 */ 2152 err = readl_poll_timeout(reg_phy + 2153 EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0, 2154 reg, !(reg & PHY_CR_PARA_CON0_PHY0_CR_PARA_ACK), 2155 sleep_us, timeout_us); 2156 if (err) 2157 dev_err(dev, "timed out waiting for rx/tx_ack: %#.8x\n", reg); 2158 2159 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK; 2160 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2161 } 2162 2163 static void 2164 exynosautov920_usb31drd_cr_write(struct exynos5_usbdrd_phy *phy_drd, 2165 u16 addr, u16 data) 2166 { > 2167 struct device *dev = phy_drd->dev; 2168 void __iomem *reg_phy = phy_drd->reg_phy; 2169 u32 cnt = 0; 2170 u32 reg; 2171 2172 /* Pre Clocking */ 2173 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2174 reg |= PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2175 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2176 2177 /* 2178 * tx clks must be available prior to assertion of tx req. 2179 * tx pstate p2 to p0 transition directly is not permitted. 2180 * tx clk ready must be asserted synchronously on tx clk prior 2181 * to internal transmit clk alignment sequence in the phy 2182 * when entering from p2 to p1 to p0. 2183 */ 2184 do { 2185 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2186 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2187 cnt++; 2188 } while (cnt < 15); 2189 2190 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2191 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2192 2193 /* 2194 * tx data path is active when tx lane is in p0 state 2195 * and tx data en asserted. enable cr_para_wr_en. 2196 */ 2197 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2198 reg &= ~PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_DATA; 2199 reg |= FIELD_PREP(PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_DATA, data) | 2200 PHY_CR_PARA_CON2_PHY0_CR_PARA_WR_EN; 2201 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON2); 2202 2203 /* write addr */ 2204 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2205 reg &= ~PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR; 2206 reg |= FIELD_PREP(PHY_CR_PARA_CON0_PHY0_CR_PARA_ADDR, addr) | 2207 PHY_CR_PARA_CON0_PHY0_CR_PARA_CLK | 2208 PHY_CR_PARA_CON0_PHY0_CR_PARA_SEL; 2209 writel(reg, reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2210 2211 /* check cr_para_ack*/ 2212 cnt = 0; 2213 do { 2214 /* 2215 * data symbols are captured by phy on rising edge of the 2216 * tx_clk when tx data enabled. 2217 * completion of the write cycle is acknowledged by assertion 2218 * of the cr_para_ack. 2219 */ 2220 exynosautov920_usb31drd_cr_clk(phy_drd, true); 2221 reg = readl(reg_phy + EXYNOSAUTOV920_USB31DRD_PHY_CR_PARA_CON0); 2222 if ((reg & PHY_CR_PARA_CON0_PHY0_CR_PARA_ACK)) 2223 break; 2224 2225 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2226 2227 /* 2228 * wait for minimum of 10 cr_para_clk cycles after phy reset 2229 * is negated, before accessing control regs to allow for 2230 * internal resets. 2231 */ 2232 cnt++; 2233 } while (cnt < 10); 2234 2235 if (cnt < 10) 2236 exynosautov920_usb31drd_cr_clk(phy_drd, false); 2237 } 2238 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy