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Mon, 10 Feb 2020 19:21:58 -0800 Received: from MTKMBS31DR.mediatek.inc (172.27.6.102) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 10 Feb 2020 19:22:33 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 11 Feb 2020 11:20:08 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 11 Feb 2020 11:20:59 +0800 From: Chunfeng Yun To: Kishon Vijay Abraham I Subject: [RESEND PATCH v5 06/11] phy: phy-mtk-tphy: add a property for disconnect threshold Date: Tue, 11 Feb 2020 11:21:11 +0800 Message-ID: <6de44061814ec3633933af2003878f6418148cfe.1581389234.git.chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: References: MIME-Version: 1.0 X-TM-SNTS-SMTP: CB15E578AF22B411B60D4ECD7DEB9D1265F937E1BDAA991A742CEF019AE963902000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200210_192207_254180_B280F7DA X-CRM114-Status: GOOD ( 12.32 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -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 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Chunfeng Yun , Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org This is used to tune the threshold of disconnect, the index range is [0, 15], the threshold voltage is about 400mV for 0, 700mV for 15, and the step is 20mV. Signed-off-by: Chunfeng Yun --- v5: no changes v4: change commit log v2~3: no changes --- drivers/phy/mediatek/phy-mtk-tphy.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index cb2ed3b25068..5afe33621dbc 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -60,6 +60,8 @@ #define U3P_USBPHYACR6 0x018 #define PA6_RG_U2_BC11_SW_EN BIT(23) #define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20) +#define PA6_RG_U2_DISCTH GENMASK(7, 4) +#define PA6_RG_U2_DISCTH_VAL(x) ((0xf & (x)) << 4) #define PA6_RG_U2_SQTH GENMASK(3, 0) #define PA6_RG_U2_SQTH_VAL(x) (0xf & (x)) @@ -300,6 +302,7 @@ struct mtk_phy_instance { int eye_src; int eye_vrt; int eye_term; + int discth; bool bc12_en; }; @@ -850,9 +853,12 @@ static void phy_parse_property(struct mtk_tphy *tphy, &instance->eye_vrt); device_property_read_u32(dev, "mediatek,eye-term", &instance->eye_term); - dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d\n", + device_property_read_u32(dev, "mediatek,discth", + &instance->discth); + dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d, disc:%d\n", instance->bc12_en, instance->eye_src, - instance->eye_vrt, instance->eye_term); + instance->eye_vrt, instance->eye_term, + instance->discth); } static void u2_phy_props_set(struct mtk_tphy *tphy, @@ -888,6 +894,13 @@ static void u2_phy_props_set(struct mtk_tphy *tphy, tmp |= PA1_RG_TERM_SEL_VAL(instance->eye_term); writel(tmp, com + U3P_USBPHYACR1); } + + if (instance->discth) { + tmp = readl(com + U3P_USBPHYACR6); + tmp &= ~PA6_RG_U2_DISCTH; + tmp |= PA6_RG_U2_DISCTH_VAL(instance->discth); + writel(tmp, com + U3P_USBPHYACR6); + } } static int mtk_phy_init(struct phy *phy)