From nobody Sat Feb 7 23:45:06 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75EAAEB64DD for ; Wed, 9 Aug 2023 09:51:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232126AbjHIJvZ (ORCPT ); Wed, 9 Aug 2023 05:51:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229498AbjHIJvW (ORCPT ); Wed, 9 Aug 2023 05:51:22 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6EADE1986; Wed, 9 Aug 2023 02:51:22 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id d2e1a72fcca58-687ca37628eso2014514b3a.1; Wed, 09 Aug 2023 02:51:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691574682; x=1692179482; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=dMmvRAr3WJDJPERsTgA3XXQnHXs/O0R8IKemxQ6u/U8=; b=kCIHP/P//featsTbOj5vRMc05VJ+kesXTUsIbe4/v6sNPkqDMH63zPgGmpUU1iBURF XsNGeI2Rn4RfXLC/fPIjzPsvswPIdDw1B6a8QpAfJCaJFnzzQBDQ6/Bq1vwlcKCa7Nt3 p6JTpwXtCm+O9YdYxRaJjBc4nQ7yk8vJp8BjaqTntF71fBOFz1rDd+L6K+LFQXFQm/47 cJZlwrt3+AgNoXb3HKblRGs4sDZ3WJ8wgvHcF9yaKCwexhwxt5vqOYNrhOIfqlYHMvDB RlFWHZbc3G176ScMExI8MwqOyi4hELE/BzVJsc51x44B6ZMRPykzJaoN+N5WowQ71N22 xw0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691574682; x=1692179482; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=dMmvRAr3WJDJPERsTgA3XXQnHXs/O0R8IKemxQ6u/U8=; b=OznQfRL9dJKccJQ6gtQjWkLRxxbmZGo6TwDn9p3dNTGqKochhUbFHeYIKIfPtTteit QSG68lpATC0Xmp8M+hKhDZOtKCTFOaQAXOSUG40aHP3lIxlV6arwAW//9sXKc3N6sVOx RtQ1VQDYquEu77DW9KVQhXJ+nl7/0dXM1kxnZ9MqQG++6ds9Joai+5OZVjz31KXBMEZ0 rHOddp/NOprN5mxQVByMIr936W/BxYWFOQZC+dzqHNFWvz8YuNaHaZ6oaWNPEpJF2SB/ 11SLllpNfcMZzAfgE90fNSwapFsQb/JAjpONAklluyvv+ReZ9eAOSJ4Y9/534FhXxLSi obVA== X-Gm-Message-State: AOJu0YyJIxAEdqinNHxt2TFVttILQgwj0uWQ++hPtz+/eMC9ZPhOYI1P frMld9RqMNbGloyIMC0BtBg= X-Google-Smtp-Source: AGHT+IFBps0WlArKN0bzaJSa2FqF89rO4p8pLeDZrE6fYEiZG2hIGrqyLrrFGjDdeegcOUWsdt1HyQ== X-Received: by 2002:a05:6a20:4ce:b0:132:8620:8d21 with SMTP id 14-20020a056a2004ce00b0013286208d21mr1906030pzd.58.1691574681786; Wed, 09 Aug 2023 02:51:21 -0700 (PDT) Received: from localhost.localdomain (60-250-192-107.hinet-ip.hinet.net. [60.250.192.107]) by smtp.gmail.com with ESMTPSA id j21-20020a62b615000000b00687375d9135sm9493822pff.4.2023.08.09.02.51.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Aug 2023 02:51:21 -0700 (PDT) From: Mia Lin To: avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com, a.zummo@towertech.it, alexandre.belloni@bootlin.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, KWLIU@nuvoton.com, JJLIU0@nuvoton.com, KFLIN@nuvoton.com, mylin1@nuvoton.com Cc: openbmc@lists.ozlabs.org, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mia Lin Subject: [PATCH v2 1/2] dt-bindings: rtc: nuvoton: Add DT compatible Date: Wed, 9 Aug 2023 17:51:11 +0800 Message-Id: <20230809095112.2836-2-mimi05633@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230809095112.2836-1-mimi05633@gmail.com> References: <20230809095112.2836-1-mimi05633@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add DT compatible "nuvoton,nct3015y" to select Signed-off-by: Mia Lin --- Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml b/= Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml index 4f9b5604acd9..67fc60fd395c 100644 --- a/Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml +++ b/Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml @@ -15,7 +15,9 @@ maintainers: =20 properties: compatible: - const: nuvoton,nct3018y + enum: + - nuvoton,nct3018y + - nuvoton,nct3015y =20 reg: maxItems: 1 --=20 2.17.1 From nobody Sat Feb 7 23:45:06 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAC48C001E0 for ; Wed, 9 Aug 2023 09:51:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232137AbjHIJv3 (ORCPT ); Wed, 9 Aug 2023 05:51:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232127AbjHIJv0 (ORCPT ); Wed, 9 Aug 2023 05:51:26 -0400 Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B90EA1FEB; Wed, 9 Aug 2023 02:51:25 -0700 (PDT) Received: by mail-pf1-x434.google.com with SMTP id d2e1a72fcca58-686f94328a4so548416b3a.0; Wed, 09 Aug 2023 02:51:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691574685; x=1692179485; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=BsaoVJzrGmnyIbJL9SlQQYggDG4l4W2+o3LDu7nhuKE=; b=aBcga/s5OW41/9IXigMdUd7yQO/I4fsTTPax7pd6uLLhd6O5yt6LAhdYSsFtUMzqRA R/pfzqM/1kKEPICV6adxWgicbr6u2pCofsWorDrACNB2oNTbGVp0PaqiKRprkcdT5Dwm hHM51BSD9g5xEDTzHguG83AA3O3765K9w2k4AAL50O0RIozY893q0MTCHIzMYWYeyI/G DH6H8EdFGk+6blGDk2ECXVho73eX2rRHR2oNdkKaEz1mVeNXSx955Dpx7WHcOMBgj8YI 9outI02pmySTAkdREvXiPAZlF8df4EZ2/rmoEglLAmlmCW4/yF5GHxuk2sqDDMSQLOvT G1Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691574685; x=1692179485; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=BsaoVJzrGmnyIbJL9SlQQYggDG4l4W2+o3LDu7nhuKE=; b=EeUlXFo+xbCdKXy/awejGQEcTNG+c7jBsKTpIzMfKAtwIn1+JB1HUFVPlY6rv62Qcu mnxrZpBdzQfd0UYu8lKn7EIF1YBuK1u5qk364OmOh2foGEtk1GLyMsEaiNkVoo5Xlmtb RyDll+r9JUtfGxazc4gVCSW+ANRdEtgyotLtJPfkWs63qfiiOsoDOI74+feTArJfZ2Im q0QJLhQ+p/Qe+Dnn2qGTj3XO/HqtTNnWYXJKqYLuhtoq8FmNgRbKDywZt+B+43pnc0tl 2URdMHf0YYKtU7oZbyNbOJHbuWOb40AJNSBTShrYQ+G8XU2Rc3iL8FjOpzsMZAkIxA3h fRHg== X-Gm-Message-State: AOJu0YwfZqRSMtUAjUldDIlJhuVZdIH9i6bfuuvWJK6jKaprOGcUsXSG 2/01zfC1zWGRqc0PPCs1O9o= X-Google-Smtp-Source: AGHT+IFsfqTKAe7SK2MRNY7tE/bxUtBUNbKqa4AxlKLV2X4VS+C7zTB7bpP1pLfXRAHjry344ThooA== X-Received: by 2002:a05:6a20:3c8f:b0:132:d09f:1716 with SMTP id b15-20020a056a203c8f00b00132d09f1716mr2964196pzj.2.1691574685135; Wed, 09 Aug 2023 02:51:25 -0700 (PDT) Received: from localhost.localdomain (60-250-192-107.hinet-ip.hinet.net. [60.250.192.107]) by smtp.gmail.com with ESMTPSA id j21-20020a62b615000000b00687375d9135sm9493822pff.4.2023.08.09.02.51.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Aug 2023 02:51:24 -0700 (PDT) From: Mia Lin To: avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com, a.zummo@towertech.it, alexandre.belloni@bootlin.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, KWLIU@nuvoton.com, JJLIU0@nuvoton.com, KFLIN@nuvoton.com, mylin1@nuvoton.com Cc: openbmc@lists.ozlabs.org, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mia Lin Subject: [PATCH v2 2/2] rtc: nuvoton: Compatible with NCT3015Y-R and NCT3018Y-R Date: Wed, 9 Aug 2023 17:51:12 +0800 Message-Id: <20230809095112.2836-3-mimi05633@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230809095112.2836-1-mimi05633@gmail.com> References: <20230809095112.2836-1-mimi05633@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" - In probe, If part number is NCT3018Y-R, only set HF bit to 24-Hour format. Else, do nothing - In set_time, If part number is NCT3018Y-R && TWO bit is 0, change TWO bit to 1, and restore TWO bit after updating time. - Use DT compatible to check the chip matches or not. Signed-off-by: Mia Lin --- drivers/rtc/rtc-nct3018y.c | 88 +++++++++++++++++++++++++++++++++----- 1 file changed, 78 insertions(+), 10 deletions(-) diff --git a/drivers/rtc/rtc-nct3018y.c b/drivers/rtc/rtc-nct3018y.c index a4e3f924837e..edc73be3ab59 100644 --- a/drivers/rtc/rtc-nct3018y.c +++ b/drivers/rtc/rtc-nct3018y.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include =20 @@ -23,6 +24,7 @@ #define NCT3018Y_REG_CTRL 0x0A /* timer control */ #define NCT3018Y_REG_ST 0x0B /* status */ #define NCT3018Y_REG_CLKO 0x0C /* clock out */ +#define NCT3018Y_REG_PART 0x21 /* part info */ =20 #define NCT3018Y_BIT_AF BIT(7) #define NCT3018Y_BIT_ST BIT(7) @@ -37,6 +39,20 @@ #define NCT3018Y_REG_BAT_MASK 0x07 #define NCT3018Y_REG_CLKO_F_MASK 0x03 /* frequenc mask */ #define NCT3018Y_REG_CLKO_CKE 0x80 /* clock out enabled */ +#define NCT3018Y_REG_PART_NCT3015Y 0x01 +#define NCT3018Y_REG_PART_NCT3018Y 0x02 + +struct rtc_data { + u8 part_number; +}; + +static const struct rtc_data nct3015y_rtc_data =3D { + .part_number =3D NCT3018Y_REG_PART_NCT3015Y, +}; + +static const struct rtc_data nct3018y_rtc_data =3D { + .part_number =3D NCT3018Y_REG_PART_NCT3018Y, +}; =20 struct nct3018y { struct rtc_device *rtc; @@ -52,7 +68,7 @@ static int nct3018y_set_alarm_mode(struct i2c_client *cli= ent, bool on) =20 dev_dbg(&client->dev, "%s:on:%d\n", __func__, on); =20 - flags =3D i2c_smbus_read_byte_data(client, NCT3018Y_REG_CTRL); + flags =3D i2c_smbus_read_byte_data(client, NCT3018Y_REG_CTRL); if (flags < 0) { dev_dbg(&client->dev, "Failed to read NCT3018Y_REG_CTRL\n"); @@ -109,8 +125,10 @@ static int nct3018y_get_alarm_mode(struct i2c_client *= client, unsigned char *ala *alarm_flag =3D flags & NCT3018Y_BIT_AF; } =20 - dev_dbg(&client->dev, "%s:alarm_enable:%x alarm_flag:%x\n", - __func__, *alarm_enable, *alarm_flag); + if (alarm_enable && alarm_flag) { + dev_dbg(&client->dev, "%s:alarm_enable:%x alarm_flag:%x\n", + __func__, *alarm_enable, *alarm_flag); + } =20 return 0; } @@ -178,7 +196,30 @@ static int nct3018y_rtc_set_time(struct device *dev, s= truct rtc_time *tm) { struct i2c_client *client =3D to_i2c_client(dev); unsigned char buf[4] =3D {0}; - int err; + int err, part_num, flags, restore_flags =3D 0; + + part_num =3D i2c_smbus_read_byte_data(client, NCT3018Y_REG_PART); + if (part_num < 0) { + dev_dbg(&client->dev, "%s: read error\n", __func__); + return part_num; + } + + flags =3D i2c_smbus_read_byte_data(client, NCT3018Y_REG_CTRL); + if (flags < 0) { + dev_dbg(&client->dev, "%s: read error\n", __func__); + return flags; + } + + /* Check and set TWO bit */ + if ((part_num & NCT3018Y_REG_PART_NCT3018Y) && !(flags & NCT3018Y_BIT_TWO= )) { + restore_flags =3D 1; + flags |=3D NCT3018Y_BIT_TWO; + err =3D i2c_smbus_write_byte_data(client, NCT3018Y_REG_CTRL, flags); + if (err < 0) { + dev_dbg(&client->dev, "Unable to write NCT3018Y_REG_CTRL\n"); + return err; + } + } =20 buf[0] =3D bin2bcd(tm->tm_sec); err =3D i2c_smbus_write_byte_data(client, NCT3018Y_REG_SC, buf[0]); @@ -212,6 +253,18 @@ static int nct3018y_rtc_set_time(struct device *dev, s= truct rtc_time *tm) return -EIO; } =20 + /* Restore TWO bit */ + if (restore_flags) { + if (part_num & NCT3018Y_REG_PART_NCT3018Y) + flags &=3D ~NCT3018Y_BIT_TWO; + + err =3D i2c_smbus_write_byte_data(client, NCT3018Y_REG_CTRL, flags); + if (err < 0) { + dev_dbg(&client->dev, "Unable to write NCT3018Y_REG_CTRL\n"); + return err; + } + } + return err; } =20 @@ -456,6 +509,7 @@ static int nct3018y_probe(struct i2c_client *client) { struct nct3018y *nct3018y; int err, flags; + const struct rtc_data *data =3D of_device_get_match_data(&client->dev); =20 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE | @@ -479,11 +533,24 @@ static int nct3018y_probe(struct i2c_client *client) dev_dbg(&client->dev, "%s: NCT3018Y_BIT_TWO is set\n", __func__); } =20 - flags =3D NCT3018Y_BIT_TWO; - err =3D i2c_smbus_write_byte_data(client, NCT3018Y_REG_CTRL, flags); - if (err < 0) { - dev_dbg(&client->dev, "Unable to write NCT3018Y_REG_CTRL\n"); - return err; + flags =3D i2c_smbus_read_byte_data(client, NCT3018Y_REG_PART); + if (flags < 0) { + dev_dbg(&client->dev, "%s: read error\n", __func__); + return flags; + } else if (flags & NCT3018Y_REG_PART_NCT3018Y) { + if (!(flags & data->part_number)) + dev_warn(&client->dev, "%s: part_num=3D0x%x but NCT3018Y_REG_PART=3D0x%= x\n", + __func__, data->part_number, flags); + flags =3D NCT3018Y_BIT_HF; + err =3D i2c_smbus_write_byte_data(client, NCT3018Y_REG_CTRL, flags); + if (err < 0) { + dev_dbg(&client->dev, "Unable to write NCT3018Y_REG_CTRL\n"); + return err; + } + } else if (flags & NCT3018Y_REG_PART_NCT3015Y) { + if (!(flags & data->part_number)) + dev_warn(&client->dev, "%s: part_num=3D0x%x but NCT3018Y_REG_PART=3D0x%= x\n", + __func__, data->part_number, flags); } =20 flags =3D 0; @@ -530,7 +597,8 @@ static const struct i2c_device_id nct3018y_id[] =3D { MODULE_DEVICE_TABLE(i2c, nct3018y_id); =20 static const struct of_device_id nct3018y_of_match[] =3D { - { .compatible =3D "nuvoton,nct3018y" }, + { .compatible =3D "nuvoton,nct3015y", .data =3D &nct3015y_rtc_data }, + { .compatible =3D "nuvoton,nct3018y", .data =3D &nct3018y_rtc_data }, {} }; MODULE_DEVICE_TABLE(of, nct3018y_of_match); --=20 2.17.1