[{"id":3682882,"web_url":"http://patchwork.ozlabs.org/comment/3682882/","msgid":"","list_archive_url":null,"date":"2026-04-27T18:42:34","subject":"Re: [PATCH v3 2/2] sunxi: H616: dram: drop default TPR6 Kconfig value","submitter":{"id":74257,"url":"http://patchwork.ozlabs.org/api/people/74257/","name":"Jernej Škrabec","email":"jernej.skrabec@gmail.com"},"content":"Dne ponedeljek, 27. april 2026 ob 15:58:19 Srednjeevropski poletni čas je Andre Przywara napisal(a):\n> CONFIG_DRAM_SUNXI_TPR6 is the only DRAM config parameter that has a\n> non-zero default value. Since we need to provide a value for all the\n> other parameters anyway, avoiding TPR6 makes no real difference.\n> To make matters worse, TPR6 is a compound value covering multiple DRAM\n> types, but also spans over three SoCs, which makes it hard to find one\n> good default value.\n> \n> Drop the default from Kconfig, and put some explicit values in the\n> defconfigs for the few boards that were relying on the default so far.\n> The value is taken from one BSP, only the lower byte matters anyway for\n> those boards, all using DDR3 DRAM.\n> \n> Signed-off-by: Andre Przywara \n\nReviewed-by: Jernej Skrabec \n\nBest regards,\nJernej","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=I5IWFEQX;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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charset=\"utf-8\"","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3683336,"web_url":"http://patchwork.ozlabs.org/comment/3683336/","msgid":"","list_archive_url":null,"date":"2026-04-28T09:49:15","subject":"Re: [PATCH v3 2/2] sunxi: H616: dram: drop default TPR6 Kconfig value","submitter":{"id":88999,"url":"http://patchwork.ozlabs.org/api/people/88999/","name":"Paul Kocialkowski","email":"paulk@sys-base.io"},"content":"Hi Andre,\n\nLe Mon 27 Apr 26, 15:58, Andre Przywara a écrit :\n> CONFIG_DRAM_SUNXI_TPR6 is the only DRAM config parameter that has a\n> non-zero default value. Since we need to provide a value for all the\n> other parameters anyway, avoiding TPR6 makes no real difference.\n> To make matters worse, TPR6 is a compound value covering multiple DRAM\n> types, but also spans over three SoCs, which makes it hard to find one\n> good default value.\n> \n> Drop the default from Kconfig, and put some explicit values in the\n> defconfigs for the few boards that were relying on the default so far.\n> The value is taken from one BSP, only the lower byte matters anyway for\n> those boards, all using DDR3 DRAM.\n\nIt looks like this change is missing some boards that we support (e.g.\nliontron-h-a133l). Is this intentional?\n\nThe TPR6 value is still used for all DRAM types, so I think we need to\ndefine it for all the boards we currently support.\n\nAll the best,\n\nPaul\n\n> Signed-off-by: Andre Przywara \n> ---\n> arch/arm/mach-sunxi/Kconfig | 1 -\n> configs/orangepi_zero2_defconfig | 1 +\n> configs/transpeed-8k618-t_defconfig | 1 +\n> configs/x96_mate_defconfig | 1 +\n> configs/x96q_defconfig | 1 +\n> 5 files changed, 4 insertions(+), 1 deletion(-)\n> \n> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig\n> index 284458ad9a5..18123e685dc 100644\n> --- a/arch/arm/mach-sunxi/Kconfig\n> +++ b/arch/arm/mach-sunxi/Kconfig\n> @@ -151,7 +151,6 @@ config DRAM_SUNXI_TPR3\n> \n> config DRAM_SUNXI_TPR6\n> \thex \"DRAM TPR6 parameter\"\n> -\tdefault 0x3300c080\n> \thelp\n> \t TPR6 value from vendor DRAM settings.\n> \n> diff --git a/configs/orangepi_zero2_defconfig b/configs/orangepi_zero2_defconfig\n> index b387b4795ad..afd1535052d 100644\n> --- a/configs/orangepi_zero2_defconfig\n> +++ b/configs/orangepi_zero2_defconfig\n> @@ -5,6 +5,7 @@ CONFIG_SPL=y\n> CONFIG_DRAM_SUNXI_DX_ODT=0x08080808\n> CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> CONFIG_DRAM_SUNXI_CA_DRI=0x0e0e\n> +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> CONFIG_DRAM_SUNXI_TPR10=0xf83438\n> CONFIG_MACH_SUN50I_H616=y\n> CONFIG_SUNXI_DRAM_H616_DDR3_1333=y\n> diff --git a/configs/transpeed-8k618-t_defconfig b/configs/transpeed-8k618-t_defconfig\n> index e4bf5e8efd3..e672d8f8df9 100644\n> --- a/configs/transpeed-8k618-t_defconfig\n> +++ b/configs/transpeed-8k618-t_defconfig\n> @@ -7,6 +7,7 @@ CONFIG_DRAM_SUNXI_DX_ODT=0x03030303\n> CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> CONFIG_DRAM_SUNXI_CA_DRI=0x1f12\n> CONFIG_DRAM_SUNXI_TPR0=0xc0001002\n> +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> CONFIG_DRAM_SUNXI_TPR10=0x2f1107\n> CONFIG_DRAM_SUNXI_TPR11=0xddddcccc\n> CONFIG_DRAM_SUNXI_TPR12=0xeddc7665\n> diff --git a/configs/x96_mate_defconfig b/configs/x96_mate_defconfig\n> index c0628370df9..1b7d9338c02 100644\n> --- a/configs/x96_mate_defconfig\n> +++ b/configs/x96_mate_defconfig\n> @@ -6,6 +6,7 @@ CONFIG_DRAM_SUNXI_DX_ODT=0x03030303\n> CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> CONFIG_DRAM_SUNXI_CA_DRI=0x1c12\n> CONFIG_DRAM_SUNXI_TPR0=0xc0000c05\n> +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> CONFIG_DRAM_SUNXI_TPR10=0x2f0007\n> CONFIG_DRAM_SUNXI_TPR11=0xffffdddd\n> CONFIG_DRAM_SUNXI_TPR12=0xfedf7557\n> diff --git a/configs/x96q_defconfig b/configs/x96q_defconfig\n> index 59f01aae4eb..068aee3fd1e 100644\n> --- a/configs/x96q_defconfig\n> +++ b/configs/x96q_defconfig\n> @@ -8,6 +8,7 @@ CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> CONFIG_DRAM_SUNXI_CA_DRI=0x1f12\n> CONFIG_DRAM_SUNXI_TPR0=0xc0001002\n> CONFIG_DRAM_SUNXI_TPR2=0x00000100\n> +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> CONFIG_DRAM_SUNXI_TPR10=0x002f0107\n> CONFIG_DRAM_SUNXI_TPR11=0xddddcccc\n> CONFIG_DRAM_SUNXI_TPR12=0xeddc7665\n> -- \n> 2.43.0\n>","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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Tue, 28 Apr 2026 12:04:26 +0200 (CEST)","from laika.paulk.fr (12.234.24.109.rev.sfr.net [109.24.234.12])\n by leonov.paulk.fr (Postfix) with ESMTPS id AFFD91F8004F\n for ; Tue, 28 Apr 2026 10:04:22 +0000 (UTC)","by laika.paulk.fr (Postfix, from userid 65534)\n id 9406DB40470; Tue, 28 Apr 2026 09:49:18 +0000 (UTC)","from collins (unknown [192.168.1.1])\n by laika.paulk.fr (Postfix) with ESMTPSA id CA12FB40465;\n Tue, 28 Apr 2026 09:49:17 +0000 (UTC)"],"X-Spam-Checker-Version":"SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de","X-Spam-Level":"","X-Spam-Status":"No, score=-1.9 required=5.0 tests=BAYES_00,\n RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham\n autolearn_force=no version=3.4.2","Date":"Tue, 28 Apr 2026 11:49:15 +0200","From":"Paul Kocialkowski ","To":"Andre Przywara ","Cc":"u-boot@lists.denx.de, Jernej Skrabec ,\n Philippe Simons , linux-sunxi@lists.linux.dev,\n Mikhail Kalashnikov ,\n Cody Eksal ","Subject":"Re: [PATCH v3 2/2] sunxi: H616: dram: drop default TPR6 Kconfig value","Message-ID":"","References":"<20260427135819.2577234-1-andre.przywara@arm.com>\n <20260427135819.2577234-3-andre.przywara@arm.com>","MIME-Version":"1.0","Content-Type":"multipart/signed; micalg=pgp-sha512;\n protocol=\"application/pgp-signature\"; boundary=\"YkmeUbdSym1pkoRU\"","Content-Disposition":"inline","In-Reply-To":"<20260427135819.2577234-3-andre.przywara@arm.com>","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3683606,"web_url":"http://patchwork.ozlabs.org/comment/3683606/","msgid":"","list_archive_url":null,"date":"2026-04-28T17:39:48","subject":"Re: [PATCH v3 2/2] sunxi: H616: dram: drop default TPR6 Kconfig value","submitter":{"id":88999,"url":"http://patchwork.ozlabs.org/api/people/88999/","name":"Paul Kocialkowski","email":"paulk@sys-base.io"},"content":"Hi again,\n\nLe Tue 28 Apr 26, 11:49, Paul Kocialkowski a écrit :\n> Hi Andre,\n> \n> Le Mon 27 Apr 26, 15:58, Andre Przywara a écrit :\n> > CONFIG_DRAM_SUNXI_TPR6 is the only DRAM config parameter that has a\n> > non-zero default value. Since we need to provide a value for all the\n> > other parameters anyway, avoiding TPR6 makes no real difference.\n> > To make matters worse, TPR6 is a compound value covering multiple DRAM\n> > types, but also spans over three SoCs, which makes it hard to find one\n> > good default value.\n> > \n> > Drop the default from Kconfig, and put some explicit values in the\n> > defconfigs for the few boards that were relying on the default so far.\n> > The value is taken from one BSP, only the lower byte matters anyway for\n> > those boards, all using DDR3 DRAM.\n> \n> It looks like this change is missing some boards that we support (e.g.\n> liontron-h-a133l). Is this intentional?\n> \n> The TPR6 value is still used for all DRAM types, so I think we need to\n> define it for all the boards we currently support.\n\nNevermind this, these other boards already have TPR6 in their config,\nlost sight of that. Then this is:\n\nReviewed-by: Paul Kocialkowski \n\nThanks for picking this up!\n\nAll the best,\n\nPaul\n\n> > Signed-off-by: Andre Przywara \n> > ---\n> > arch/arm/mach-sunxi/Kconfig | 1 -\n> > configs/orangepi_zero2_defconfig | 1 +\n> > configs/transpeed-8k618-t_defconfig | 1 +\n> > configs/x96_mate_defconfig | 1 +\n> > configs/x96q_defconfig | 1 +\n> > 5 files changed, 4 insertions(+), 1 deletion(-)\n> > \n> > diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig\n> > index 284458ad9a5..18123e685dc 100644\n> > --- a/arch/arm/mach-sunxi/Kconfig\n> > +++ b/arch/arm/mach-sunxi/Kconfig\n> > @@ -151,7 +151,6 @@ config DRAM_SUNXI_TPR3\n> > \n> > config DRAM_SUNXI_TPR6\n> > \thex \"DRAM TPR6 parameter\"\n> > -\tdefault 0x3300c080\n> > \thelp\n> > \t TPR6 value from vendor DRAM settings.\n> > \n> > diff --git a/configs/orangepi_zero2_defconfig b/configs/orangepi_zero2_defconfig\n> > index b387b4795ad..afd1535052d 100644\n> > --- a/configs/orangepi_zero2_defconfig\n> > +++ b/configs/orangepi_zero2_defconfig\n> > @@ -5,6 +5,7 @@ CONFIG_SPL=y\n> > CONFIG_DRAM_SUNXI_DX_ODT=0x08080808\n> > CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> > CONFIG_DRAM_SUNXI_CA_DRI=0x0e0e\n> > +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> > CONFIG_DRAM_SUNXI_TPR10=0xf83438\n> > CONFIG_MACH_SUN50I_H616=y\n> > CONFIG_SUNXI_DRAM_H616_DDR3_1333=y\n> > diff --git a/configs/transpeed-8k618-t_defconfig b/configs/transpeed-8k618-t_defconfig\n> > index e4bf5e8efd3..e672d8f8df9 100644\n> > --- a/configs/transpeed-8k618-t_defconfig\n> > +++ b/configs/transpeed-8k618-t_defconfig\n> > @@ -7,6 +7,7 @@ CONFIG_DRAM_SUNXI_DX_ODT=0x03030303\n> > CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> > CONFIG_DRAM_SUNXI_CA_DRI=0x1f12\n> > CONFIG_DRAM_SUNXI_TPR0=0xc0001002\n> > +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> > CONFIG_DRAM_SUNXI_TPR10=0x2f1107\n> > CONFIG_DRAM_SUNXI_TPR11=0xddddcccc\n> > CONFIG_DRAM_SUNXI_TPR12=0xeddc7665\n> > diff --git a/configs/x96_mate_defconfig b/configs/x96_mate_defconfig\n> > index c0628370df9..1b7d9338c02 100644\n> > --- a/configs/x96_mate_defconfig\n> > +++ b/configs/x96_mate_defconfig\n> > @@ -6,6 +6,7 @@ CONFIG_DRAM_SUNXI_DX_ODT=0x03030303\n> > CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> > CONFIG_DRAM_SUNXI_CA_DRI=0x1c12\n> > CONFIG_DRAM_SUNXI_TPR0=0xc0000c05\n> > +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> > CONFIG_DRAM_SUNXI_TPR10=0x2f0007\n> > CONFIG_DRAM_SUNXI_TPR11=0xffffdddd\n> > CONFIG_DRAM_SUNXI_TPR12=0xfedf7557\n> > diff --git a/configs/x96q_defconfig b/configs/x96q_defconfig\n> > index 59f01aae4eb..068aee3fd1e 100644\n> > --- a/configs/x96q_defconfig\n> > +++ b/configs/x96q_defconfig\n> > @@ -8,6 +8,7 @@ CONFIG_DRAM_SUNXI_DX_DRI=0x0e0e0e0e\n> > CONFIG_DRAM_SUNXI_CA_DRI=0x1f12\n> > CONFIG_DRAM_SUNXI_TPR0=0xc0001002\n> > CONFIG_DRAM_SUNXI_TPR2=0x00000100\n> > +CONFIG_DRAM_SUNXI_TPR6=0x33808080\n> > CONFIG_DRAM_SUNXI_TPR10=0x002f0107\n> > CONFIG_DRAM_SUNXI_TPR11=0xddddcccc\n> > CONFIG_DRAM_SUNXI_TPR12=0xeddc7665\n> > -- \n> > 2.43.0\n> > \n> \n> -- \n> Paul Kocialkowski,\n> \n> Independent contractor - sys-base - https://www.sys-base.io/\n> Free software developer - https://www.paulk.fr/\n> \n> Expert in multimedia, graphics and embedded hardware support with Linux.","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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