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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 402C6EB64DB for ; Thu, 15 Jun 2023 00:41:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237189AbjFOAlF (ORCPT ); Wed, 14 Jun 2023 20:41:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229736AbjFOAlC (ORCPT ); Wed, 14 Jun 2023 20:41:02 -0400 Received: from mail-qt1-x829.google.com (mail-qt1-x829.google.com [IPv6:2607:f8b0:4864:20::829]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31062269A for ; Wed, 14 Jun 2023 17:41:01 -0700 (PDT) Received: by mail-qt1-x829.google.com with SMTP id d75a77b69052e-3f9f25d6690so25107751cf.2 for ; Wed, 14 Jun 2023 17:41:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1686789660; x=1689381660; h=in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:from:to:cc:subject:date:message-id:reply-to; bh=ceXTs5fo2wPeD5EjFkyVtWzHeZ2vUXknfNhzsuttbEE=; b=C8ymNaywz4uYj4ENU/ElLaJaOAMzD52Ud9HUspFW9Iajb0Vh5AGMemq/gotyD3k/I2 bOXfNVdjDlm/W3D2gXonwnztBQtaITSIdkef9pRU9oZzX6DMfqih8b3ZtyiOHZcdDonq gMDYPJFKM9R5qvozvwZrbOxw5enPuidgrwJ3E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686789660; x=1689381660; h=in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ceXTs5fo2wPeD5EjFkyVtWzHeZ2vUXknfNhzsuttbEE=; b=UzAE7UqYYOnWp3OHBx8hJW6kYCbL6mUjFGLXwGHfmCQcekpRqc74kDs4RYvIWZTxvu H24U2zj0BJZkWq4IaF859d1uN12E1gk7mf6+WXHkK3OncSgpqV/AVBBkRzWB1niZbZ9H gnTV5DU4OTenmTZsUqHrfuT5HujKnICgOvKVQqrz46ftSK7NHhA93gF4OfJUD+T11bX9 7VPp9ONcyM51T/KmwMOcGsF3CYZIkOtCgnDc4xEJ7Hcfx1sdb+6U2CE1+d0WRt1zzzU3 hJUPNWScnuIx57hnIlcDvAes5mijaJXpl2D5gfuEJA7ybytSSZlUOX+d1xcvqpk7qDkR BA1w== X-Gm-Message-State: AC+VfDz6A/dAhg0GjA770BhSI5ofWdU0dZNXyJiD66jxBMSVt7EcpoAb 740BbmgZ5BR34KSb9sksnacTPw== X-Google-Smtp-Source: ACHHUZ4SW7suYJRETsMfGnkWcan/YnzezUP+Ky5UHqcP/jKYy0jYkqKhescJ6SFlOqEAD60BB6dGNw== X-Received: by 2002:a05:622a:13:b0:3f9:d619:bb1 with SMTP id x19-20020a05622a001300b003f9d6190bb1mr4570649qtw.7.1686789660248; Wed, 14 Jun 2023 17:41:00 -0700 (PDT) Received: from bcacpedev-irv-3.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id o16-20020a05622a009000b003ef2c959d1bsm5519507qtw.67.2023.06.14.17.40.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Jun 2023 17:40:59 -0700 (PDT) Subject: Re: [PATCH 05/12] dt-bindings: mtd: brcmnand: Updates for bcmbca SoCs To: Rob Herring , Miquel Raynal Cc: Broadcom Kernel List , Linux MTD List , f.fainelli@gmail.com, rafal@milecki.pl, kursad.oney@broadcom.com, joel.peshkin@broadcom.com, computersforpeace@gmail.com, anand.gore@broadcom.com, dregan@mail.com, kamal.dasu@broadcom.com, tomer.yacoby@broadcom.com, dan.beygelman@broadcom.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski , Vignesh Raghavendra , Richard Weinberger , Kamal Dasu References: <20230606231252.94838-1-william.zhang@broadcom.com> <20230606231252.94838-6-william.zhang@broadcom.com> <20230607101452.4c265d7e@xps-13> <20230614224605.GB2990941-robh@kernel.org> From: William Zhang Message-ID: Date: Wed, 14 Jun 2023 17:40:55 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20230614224605.GB2990941-robh@kernel.org> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000087224505fe2052b6" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --00000000000087224505fe2052b6 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Hi Rob, On 06/14/2023 03:46 PM, Rob Herring wrote: > On Wed, Jun 07, 2023 at 10:14:52AM +0200, Miquel Raynal wrote: >> Hi William, >> >> william.zhang@broadcom.com wrote on Tue, 6 Jun 2023 16:12:45 -0700: >> >>> Use new compatiable brcm,nand-bcmbca to support BCMBCA broadband >>> product. The old compatible string is still kept in the driver so old >>> dtb can still work. >>> >>> Add brcm,nand-use-wp property to have an option for disabling this >>> feature on broadband board design that does not use write protection. >>> Add brcm,nand-ecc-use-strap to get ecc setting from board strap for >>> broadband board designs because they do not specify ecc setting in dts >>> but rather using the strap setting. >>> >>> Remove the requirement of interrupts and interrupt-names properties to >>> reflect the driver code. >>> >>> This patch also includes a few minor fixes to the BCM63xx compatibles >>> and add myself to the list of maintainers. >>> >>> Signed-off-by: William Zhang >>> --- >>> >>> .../bindings/mtd/brcm,brcmnand.yaml | 64 +++++++++++++------ >>> 1 file changed, 43 insertions(+), 21 deletions(-) >>> >>> diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml >>> index 1571024aa119..1fe1c166a9db 100644 >>> --- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml >>> +++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml >>> @@ -9,6 +9,7 @@ title: Broadcom STB NAND Controller >>> maintainers: >>> - Brian Norris >>> - Kamal Dasu >>> + - William Zhang >>> >>> description: | >>> The Broadcom Set-Top Box NAND controller supports low-level access to raw NAND >>> @@ -18,9 +19,10 @@ description: | >>> supports basic PROGRAM and READ functions, among other features. >>> >>> This controller was originally designed for STB SoCs (BCM7xxx) but is now >>> - available on a variety of Broadcom SoCs, including some BCM3xxx, BCM63xx, and >>> - iProc/Cygnus. Its history includes several similar (but not fully register >>> - compatible) versions. >>> + available on a variety of Broadcom SoCs, including some BCM3xxx, MIPS based >>> + Broadband SoC (BCM63xx), ARM based Broadband SoC (BCMBCA) and iProc/Cygnus. >>> + Its history includes several similar (but not fully register compatible) >>> + versions. >>> >>> -- Additional SoC-specific NAND controller properties -- >>> >>> @@ -53,9 +55,9 @@ properties: >>> - brcm,brcmnand-v7.2 >>> - brcm,brcmnand-v7.3 >>> - const: brcm,brcmnand >>> - - description: BCM63138 SoC-specific NAND controller >>> + - description: BCMBCA SoC-specific NAND controller >>> items: >>> - - const: brcm,nand-bcm63138 >>> + - const: brcm,nand-bcmbca >>> - enum: >>> - brcm,brcmnand-v7.0 >>> - brcm,brcmnand-v7.1 >>> @@ -65,11 +67,15 @@ properties: >>> - const: brcm,nand-iproc >>> - const: brcm,brcmnand-v6.1 >>> - const: brcm,brcmnand >>> - - description: BCM63168 SoC-specific NAND controller >>> + - description: BCM63xx SoC-specific NAND controller >>> items: >>> - - const: brcm,nand-bcm63168 >>> - - const: brcm,nand-bcm6368 >>> - - const: brcm,brcmnand-v4.0 >>> + - enum: >>> + - brcm,nand-bcm63168 >>> + - brcm,nand-bcm6368 >>> + - enum: >>> + - brcm,brcmnand-v2.1 >>> + - brcm,brcmnand-v2.2 >>> + - brcm,brcmnand-v4.0 >>> - const: brcm,brcmnand >>> >>> reg: >>> @@ -111,6 +117,19 @@ properties: >>> earlier versions of this core that include WP >>> type: boolean >>> >>> + brcm,nand-use-wp: >>> + description: >>> + Use this integer to indicate if board design uses >>> + controller's write protection feature and connects its >>> + NAND_WPb pin to nand chip's WP_L pin. Driver defaults to >>> + use this feature when this property does not exist. >>> + Set to 0 if WP pins are not connected and feature is not >>> + used. Set to 1 if WP pins are connected and feature is used. >>> + Set to 2 if WP pins are connected but disable this feature >>> + through driver that sets controller to output high on NAND_WPb. >>> + $ref: /schemas/types.yaml#/definitions/uint32 >>> + enum: [0, 1, 2] >> >> Perhaps strings would be welcome. I'll let binding maintainers say what >> they think of it. > > 1 is redundant as it is the same as not present. Seems like a > 'brcm,disable-wp' boolean would suffice here. > WP feature present is indicated by the existing flag brcm,nand-has-wp. 1 is the opposite of 0 (use this feature vs not use this feature while chip has this feature). 2 is kind of strange (for feature disabled intentionally at run time while feature is used), maybe for testing purpose or for certainly nand chip that has issue with WP but the board design already connect the WP pin. I keep it here to match the driver code that have these three states of the wp usage. > Rob > --00000000000087224505fe2052b6 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQcAYJKoZIhvcNAQcCoIIQYTCCEF0CAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3HMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e 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