From patchwork Mon May 16 17:50:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12851308 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 2482BC4332F for ; Mon, 16 May 2022 17:50:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4rfAho1Yj3cN3ikeBtkTMNX6o8qmqTBzYidGhG4h+7k=; b=j2diLzXXcLpHzo G814ld7o8wTCXsV2NihsPTEpDL84X9HNUxH2hnlaNPMPsK+nZZDAZsYeuVqSMvnbDk8wg/ZT5vIRd aPXYFhpNgDTLwM8C6AY1H2CgoUUPjSMRjefwKeI+FvMLP05sBwHs1fWgI6Nr7sYhJe3xx1pUuZJ9K P+kpBqJaAjGCH7qTJd2wQUlWwz3yVNacaMgaLrJJa/N0VNHmNjR7x1RLmLkG8a2F8lNF1K8m34wvH 4rF0T0P5X02NYbWtYizOMsVAPfF5RysGmDqs2ALE9NlhNStDwxG2GD+BhnViE3zqFxDDghLtKJzKT 2+WY846s8phfNAryEhbw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqerc-009R6E-Ch; Mon, 16 May 2022 17:50:36 +0000 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqerY-009R4y-Jh for linux-phy@lists.infradead.org; Mon, 16 May 2022 17:50:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652723432; x=1684259432; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=ROpZX7KpgpNHLp58m88YI8mxh2bPxNN+kCfSysxEp8s=; b=tnPf9YnucLM5lOgFYzku5WC98535Lm99BoUgGkrAFOwVoqkq0sbhJ8Lo WYenDecxhF9CfQSRx05qZSMKERvmuXE0QmkFUood9YeHD43IjIOL06Av3 RCtKwpN0xpoXtvdQ/0y+X9Jk/T5Ah6qF3L7eGJVgMVeMMBW/GWnRAdX84 Q=; Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-01.qualcomm.com with ESMTP; 16 May 2022 10:50:28 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg01-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2022 10:50:27 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 16 May 2022 10:50:27 -0700 Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 16 May 2022 10:50:21 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng CC: , , , , , , , , Sandeep Maheswaram , Krishna Kurapati Subject: [v5 1/3] dt-bindings: phy: qcom, usb-snps-femto-v2: Add phy override params bindings Date: Mon, 16 May 2022 23:20:08 +0530 Message-ID: <1652723410-1630-2-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> References: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220516_105032_718971_92FCAE5C X-CRM114-Status: GOOD ( 13.20 ) 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: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Sandeep Maheswaram Add device tree bindings for SNPS phy tuning parameters. Signed-off-by: Sandeep Maheswaram Signed-off-by: Krishna Kurapati --- .../bindings/phy/qcom,usb-snps-femto-v2.yaml | 105 +++++++++++++++++++++ 1 file changed, 105 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml index 1ce251d..0a78db7 100644 --- a/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml @@ -53,6 +53,111 @@ properties: vdda33-supply: description: phandle to the regulator 3.3V supply node. + qcom,hs-disconnect-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the voltage level for the threshold used to + detect a disconnect event at the host. Possible values are. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -272 + maximum: 2156 + + qcom,squelch-detector-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the voltage level for the threshold used to + detect valid high-speed data. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -2090 + maximum: 1590 + + qcom,hs-amplitude-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the high-speed DC level voltage. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -660 + maximum: 2670 + + qcom,pre-emphasis-duration-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This signal controls the duration for which the + HS pre-emphasis current is sourced onto DP<#> or DM<#>. + The HS Transmitter pre-emphasis duration is defined in terms of + unit amounts. One unit of pre-emphasis duration is approximately + 650 ps and is defined as 1X pre-emphasis duration. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: 10000 + maximum: 20000 + + qcom,pre-emphasis-amplitude-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This signal controls the amount of current sourced to + DP<#> and DM<#> after a J-to-K or K-to-J transition. + The HS Transmitter pre-emphasis current is defined in terms of unit + amounts. One unit amount is approximately 2 mA and is defined as + 1X pre-emphasis current. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: 10000 + maximum: 40000 + + qcom,hs-rise-fall-time-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the rise/fall times of the high-speed waveform. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimim: -4100 + maximum: 5430 + + qcom,hs-crossover-voltage-microvolt: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the voltage at which the DP<#> and DM<#> + signals cross while transmitting in HS mode. + The values defined are in milli volts. The hardware accepts only + discrete values. The value closest to the provided input will be + chosen as the override value for this param. + minimum: -31000 + maximum: 28000 + + qcom,hs-output-impedance-micro-ohm: + $ref: /schemas/types.yaml#/definitions/int32 + description: + In some applications, there can be significant series resistance + on the D+ and D- paths between the transceiver and cable. This adjusts + the driver source impedance to compensate for added series + resistance on the USB. The values defined are in milli ohms. + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -2300000 + maximum: 6100000 + + qcom,ls-fs-output-impedance-bp: + $ref: /schemas/types.yaml#/definitions/int32 + description: + This adjusts the low- and full-speed single-ended source + impedance while driving high. The following adjustment values are based + on nominal process, voltage, and temperature. + The values defined are in multiples of basis points (1bp = 0.01%). + The hardware accepts only discrete values. The value closest to the + provided input will be chosen as the override value for this param. + minimum: -1053 + maximum: 1310 + required: - compatible - reg From patchwork Mon May 16 17:50:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12851309 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 34D86C433EF for ; Mon, 16 May 2022 17:50:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oRhEdonYSvaaAmKNvipjCktUnwl2iut93xTD1fTQuYw=; b=hRq9vI5gb2mKxA VI9AseAEY828QX4JW4+5ByL7U3i4+rVBY/mCf4Zpvadrff/HnmAHFTzigPXFeIMFwgO3FAo0tAUxQ XjkeeYiXJQ+YbuSfcG7xdLGnp8hYj6l7PWLtSFxk1Ovupvv7WhXbN1KEUQRkOJ3cnkcj9DzPW9Pdt Jb+Su+kT6j9Ky3P5sI02KwNerBafWl0Ogeld2zPuX3jM2xPA6kxtT+PbvkK9QgBggHEsZ5qulTwDC Ec6Gjx2T9iFKoIcgaozJnxMQXDGpJyPQzr6aKKdoKFlstsLcYJsl3F5xeAeNr1VrMNMeGAtlpRv2x w3MUlFta/Lgv+dI/21vA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqere-009R7G-Ki; Mon, 16 May 2022 17:50:38 +0000 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqerb-009R4y-E2 for linux-phy@lists.infradead.org; Mon, 16 May 2022 17:50:37 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652723435; x=1684259435; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=2uOVMjTmdd0TYOJT64aeYkFV3LQ4eNGYHRozVom1A0k=; b=AqXq0g9a8DveUF9d2i0rxLUH2VbXoVjZNmFPlOvsJ8MaKAguCioloGdG W4S0qrvuaNqhDqJkCLr2nDia+aZUlMT83yQaAF5rO3Qlkwtx4RKeh97qy OG5Y+XSiXaIhUWQUgKSLzy+y7y7huTLkMndpzbnRR7h5yOEtQVoE8kzki 0=; Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by alexa-out-sd-01.qualcomm.com with ESMTP; 16 May 2022 10:50:35 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg05-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2022 10:50:34 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 16 May 2022 10:50:34 -0700 Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 16 May 2022 10:50:28 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng CC: , , , , , , , , Krishna Kurapati Subject: [v5 2/3] phy: qcom-snps: Add support for overriding phy tuning parameters Date: Mon, 16 May 2022 23:20:09 +0530 Message-ID: <1652723410-1630-3-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> References: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220516_105035_542812_24A8722E X-CRM114-Status: GOOD ( 19.23 ) 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: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add support for overriding electrical signal tuning parameters for SNPS HS Phy. Signed-off-by: Krishna Kurapati --- drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 268 +++++++++++++++++++++++++- 1 file changed, 266 insertions(+), 2 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c b/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c index 5d20378..fa60e8d 100644 --- a/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c +++ b/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c @@ -52,6 +52,12 @@ #define USB2_SUSPEND_N BIT(2) #define USB2_SUSPEND_N_SEL BIT(3) +#define USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X0 (0x6c) +#define USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X1 (0x70) +#define USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X2 (0x74) +#define USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X3 (0x78) +#define PARAM_OVRD_MASK 0xFF + #define USB2_PHY_USB_PHY_CFG0 (0x94) #define UTMI_PHY_DATAPATH_CTRL_OVERRIDE_EN BIT(0) #define UTMI_PHY_CMN_CTRL_OVERRIDE_EN BIT(1) @@ -60,12 +66,76 @@ #define REFCLK_SEL_MASK GENMASK(1, 0) #define REFCLK_SEL_DEFAULT (0x2 << 0) +#define HS_DISCONNECT_MASK GENMASK(2, 0) + +#define SQUELCH_DETECTOR_MASK GENMASK(7, 5) + +#define HS_AMPLITUDE_MASK GENMASK(3, 0) + +#define PREEMPHASIS_DURATION_MASK BIT(5) + +#define PREEMPHASIS_AMPLITUDE_MASK GENMASK(7, 6) + +#define HS_RISE_FALL_MASK GENMASK(1, 0) + +#define HS_CROSSOVER_VOLTAGE_MASK GENMASK(3, 2) + +#define HS_OUTPUT_IMPEDANCE_MASK GENMASK(5, 4) + +#define LS_FS_OUTPUT_IMPEDANCE_MASK GENMASK(3, 0) + + static const char * const qcom_snps_hsphy_vreg_names[] = { "vdda-pll", "vdda33", "vdda18", }; #define SNPS_HS_NUM_VREGS ARRAY_SIZE(qcom_snps_hsphy_vreg_names) +struct override_param { + s32 value; + u8 reg; +}; + +#define OVERRIDE_PARAM(bps, val)\ +{ \ + .value = bps, \ + .reg = val, \ +} + +struct override_param_map { + struct override_param *param_table; + u8 table_size; + u8 reg_offset; + u8 param_mask; +}; + +#define OVERRIDE_PARAM_MAP(table, num_elements, offset, mask) \ +{ \ + .param_table = table, \ + .table_size = num_elements, \ + .reg_offset = offset, \ + .param_mask = mask, \ +} + +struct phy_override_seq { + bool need_update; + u8 offset; + u8 value; + u8 mask; +}; + +static const char *phy_seq_props[] = { + "qcom,hs-disconnect-bp", + "qcom,squelch-detector-bp", + "qcom,hs-amplitude-bp", + "qcom,pre-emphasis-duration-bp", + "qcom,pre-emphasis-amplitude-bp", + "qcom,hs-rise-fall-time-bp", + "qcom,hs-crossover-voltage-microvolt", + "qcom,hs-output-impedance-micro-ohm", + "qcom,ls-fs-output-impedance-bp", +}; + /** * struct qcom_snps_hsphy - snps hs phy attributes * @@ -91,6 +161,7 @@ struct qcom_snps_hsphy { bool phy_initialized; enum phy_mode mode; + struct phy_override_seq update_seq_cfg[ARRAY_SIZE(phy_seq_props)]; }; static inline void qcom_snps_hsphy_write_mask(void __iomem *base, u32 offset, @@ -173,10 +244,147 @@ static int qcom_snps_hsphy_set_mode(struct phy *phy, enum phy_mode mode, return 0; } +static struct override_param hs_disconnect_sc7280[] = { + OVERRIDE_PARAM(-272, 0), + OVERRIDE_PARAM(0, 1), + OVERRIDE_PARAM(317, 2), + OVERRIDE_PARAM(630, 3), + OVERRIDE_PARAM(973, 4), + OVERRIDE_PARAM(1332, 5), + OVERRIDE_PARAM(1743, 6), + OVERRIDE_PARAM(2156, 7), +}; + +static struct override_param squelch_det_threshold_sc7280[] = { + OVERRIDE_PARAM(-2090, 7), + OVERRIDE_PARAM(-1560, 6), + OVERRIDE_PARAM(-1030, 5), + OVERRIDE_PARAM(-530, 4), + OVERRIDE_PARAM(0, 3), + OVERRIDE_PARAM(530, 2), + OVERRIDE_PARAM(1060, 1), + OVERRIDE_PARAM(1590, 0), +}; + +static struct override_param hs_amplitude_sc7280[] = { + OVERRIDE_PARAM(-660, 0), + OVERRIDE_PARAM(-440, 1), + OVERRIDE_PARAM(-220, 2), + OVERRIDE_PARAM(0, 3), + OVERRIDE_PARAM(230, 4), + OVERRIDE_PARAM(440, 5), + OVERRIDE_PARAM(650, 6), + OVERRIDE_PARAM(890, 7), + OVERRIDE_PARAM(1110, 8), + OVERRIDE_PARAM(1330, 9), + OVERRIDE_PARAM(1560, 10), + OVERRIDE_PARAM(1780, 11), + OVERRIDE_PARAM(2000, 12), + OVERRIDE_PARAM(2220, 13), + OVERRIDE_PARAM(2430, 14), + OVERRIDE_PARAM(2670, 15), +}; + +static struct override_param preemphasis_duration_sc7280[] = { + OVERRIDE_PARAM(10000, 1), + OVERRIDE_PARAM(20000, 0), +}; + +static struct override_param preemphasis_amplitude_sc7280[] = { + OVERRIDE_PARAM(10000, 1), + OVERRIDE_PARAM(20000, 2), + OVERRIDE_PARAM(30000, 3), + OVERRIDE_PARAM(40000, 0), +}; + +static struct override_param hs_rise_fall_time_sc7280[] = { + OVERRIDE_PARAM(-4100, 3), + OVERRIDE_PARAM(0, 2), + OVERRIDE_PARAM(2810, 1), + OVERRIDE_PARAM(5430, 0), +}; + +static struct override_param hs_crossover_voltage_sc7280[] = { + OVERRIDE_PARAM(-31000, 1), + OVERRIDE_PARAM(0, 3), + OVERRIDE_PARAM(28000, 2), +}; + +static struct override_param hs_output_impedance_sc7280[] = { + OVERRIDE_PARAM(-2300000, 3), + OVERRIDE_PARAM(0, 2), + OVERRIDE_PARAM(2600000, 1), + OVERRIDE_PARAM(6100000, 0), +}; + +static struct override_param ls_fs_output_impedance_sc7280[] = { + OVERRIDE_PARAM(-1053, 15), + OVERRIDE_PARAM(-557, 7), + OVERRIDE_PARAM(0, 3), + OVERRIDE_PARAM(612, 1), + OVERRIDE_PARAM(1310, 0), +}; + +struct override_param_map sc7280_idp[] = { + OVERRIDE_PARAM_MAP( + hs_disconnect_sc7280, + ARRAY_SIZE(hs_disconnect_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X0, + HS_DISCONNECT_MASK), + + OVERRIDE_PARAM_MAP( + squelch_det_threshold_sc7280, + ARRAY_SIZE(squelch_det_threshold_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X0, + SQUELCH_DETECTOR_MASK), + + OVERRIDE_PARAM_MAP( + hs_amplitude_sc7280, + ARRAY_SIZE(hs_amplitude_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X1, + HS_AMPLITUDE_MASK), + + OVERRIDE_PARAM_MAP( + preemphasis_duration_sc7280, + ARRAY_SIZE(preemphasis_duration_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X1, + PREEMPHASIS_DURATION_MASK), + + OVERRIDE_PARAM_MAP( + preemphasis_amplitude_sc7280, + ARRAY_SIZE(preemphasis_amplitude_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X1, + PREEMPHASIS_AMPLITUDE_MASK), + + OVERRIDE_PARAM_MAP( + hs_rise_fall_time_sc7280, + ARRAY_SIZE(hs_rise_fall_time_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X2, + HS_RISE_FALL_MASK), + + OVERRIDE_PARAM_MAP( + hs_crossover_voltage_sc7280, + ARRAY_SIZE(hs_crossover_voltage_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X2, + HS_CROSSOVER_VOLTAGE_MASK), + + OVERRIDE_PARAM_MAP( + hs_output_impedance_sc7280, + ARRAY_SIZE(hs_output_impedance_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X2, + HS_OUTPUT_IMPEDANCE_MASK), + + OVERRIDE_PARAM_MAP( + ls_fs_output_impedance_sc7280, + ARRAY_SIZE(ls_fs_output_impedance_sc7280), + USB2_PHY_USB_PHY_HS_PHY_OVERRIDE_X3, + LS_FS_OUTPUT_IMPEDANCE_MASK), +}; + static int qcom_snps_hsphy_init(struct phy *phy) { struct qcom_snps_hsphy *hsphy = phy_get_drvdata(phy); - int ret; + int ret, i; dev_vdbg(&phy->dev, "%s(): Initializing SNPS HS phy\n", __func__); @@ -223,6 +431,14 @@ static int qcom_snps_hsphy_init(struct phy *phy) qcom_snps_hsphy_write_mask(hsphy->base, USB2_PHY_USB_PHY_HS_PHY_CTRL1, VBUSVLDEXT0, VBUSVLDEXT0); + for (i = 0; i < ARRAY_SIZE(hsphy->update_seq_cfg); i++) { + if (hsphy->update_seq_cfg[i].need_update) + qcom_snps_hsphy_write_mask(hsphy->base, + hsphy->update_seq_cfg[i].offset, + hsphy->update_seq_cfg[i].mask, + hsphy->update_seq_cfg[i].value); + } + qcom_snps_hsphy_write_mask(hsphy->base, USB2_PHY_USB_PHY_HS_PHY_CTRL_COMMON2, VREGBYPASS, VREGBYPASS); @@ -280,7 +496,10 @@ static const struct phy_ops qcom_snps_hsphy_gen_ops = { static const struct of_device_id qcom_snps_hsphy_of_match_table[] = { { .compatible = "qcom,sm8150-usb-hs-phy", }, { .compatible = "qcom,usb-snps-hs-5nm-phy", }, - { .compatible = "qcom,usb-snps-hs-7nm-phy", }, + { + .compatible = "qcom,usb-snps-hs-7nm-phy", + .data = &sc7280_idp, + }, { .compatible = "qcom,usb-snps-femto-v2-phy", }, { } }; @@ -291,6 +510,50 @@ static const struct dev_pm_ops qcom_snps_hsphy_pm_ops = { qcom_snps_hsphy_runtime_resume, NULL) }; +static void qcom_snps_hsphy_override_param_update_val( + const struct override_param_map map, + s32 dt_val, struct phy_override_seq *seq_entry) +{ + int i; + + /* + * Param table for each param is in increasing order + * of dt values. We need to iterate over the list to + * select the entry that has equal or the next highest value. + */ + for (i = 0 ; i < map.table_size-1; i++) { + if (map.param_table[i].value >= dt_val) + break; + } + + seq_entry->need_update = true; + seq_entry->offset = map.reg_offset; + seq_entry->mask = map.param_mask; + seq_entry->value = map.param_table[i].reg << __ffs(map.param_mask); +} + +static void qcom_snps_hsphy_read_override_param_seq(struct device *dev) +{ + struct device_node *node = dev->of_node; + s32 val; + int ret, i; + struct qcom_snps_hsphy *hsphy; + struct override_param_map *cfg = + (struct override_param_map *) of_device_get_match_data(dev); + + hsphy = dev_get_drvdata(dev); + + for (i = 0; i < ARRAY_SIZE(phy_seq_props); i++) { + ret = of_property_read_s32(node, phy_seq_props[i], &val); + if (!ret) { + dev_dbg(&hsphy->phy->dev, "Read param: %s val: %d\n", + phy_seq_props[i], val); + qcom_snps_hsphy_override_param_update_val(cfg[i], val, + &hsphy->update_seq_cfg[i]); + } + } +} + static int qcom_snps_hsphy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -352,6 +615,7 @@ static int qcom_snps_hsphy_probe(struct platform_device *pdev) dev_set_drvdata(dev, hsphy); phy_set_drvdata(generic_phy, hsphy); + qcom_snps_hsphy_read_override_param_seq(dev); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) From patchwork Mon May 16 17:50:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12851310 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 9197EC43217 for ; Mon, 16 May 2022 17:50:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; 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Mon, 16 May 2022 10:50:34 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Stephen Boyd , "Doug Anderson" , Matthias Kaehlcke , Wesley Cheng CC: , , , , , , , , Krishna Kurapati Subject: [v5 3/3] arm64: dts: qcom: sc7280: Update SNPS Phy params for SC7280 IDP device Date: Mon, 16 May 2022 23:20:10 +0530 Message-ID: <1652723410-1630-4-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> References: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220516_105041_020620_196543FD X-CRM114-Status: UNSURE ( 8.36 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Overriding the SNPS Phy tuning parameters for SC7280 IDP device. Signed-off-by: Krishna Kurapati --- arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi index 5eb6689..556fb04 100644 --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi @@ -325,6 +325,12 @@ vdda-pll-supply = <&vreg_l10c_0p8>; vdda33-supply = <&vreg_l2b_3p0>; vdda18-supply = <&vreg_l1c_1p8>; + qcom,hs-rise-fall-time-bp = <0>; + qcom,squelch-detector-bp = <(-2090)>; + qcom,hs-disconnect-bp = <1743>; + qcom,hs-amplitude-bp = <1780>; + qcom,hs-crossover-voltage-microvolt = <(-31000)>; + qcom,hs-output-impedance-micro-ohm = <2600000>; }; &usb_1_qmpphy {