From: "Arnd Bergmann" <arnd@arndb.de>
To: "Alexander Stein" <alexander.stein@ew.tq-group.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Olof Johansson" <olof@lixom.net>,
"Shawn Guo" <shawnguo@kernel.org>, "Li Yang" <leoyang.li@nxp.com>,
"Russell King" <linux@armlinux.org.uk>,
"Marek Vasut" <marex@denx.de>,
"Marcel Ziswiler" <marcel.ziswiler@toradex.com>
Cc: soc@kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 9/9] [DNI] ARM: multi_v7_defconfig: Enable CONFIG_ARM_LPAE for multi_v7_config
Date: Thu, 19 Jan 2023 16:09:05 +0100 [thread overview]
Message-ID: <f1de9cd9-a163-4b56-adf8-319eaf85e38e@app.fastmail.com> (raw)
In-Reply-To: <20230119144236.3541751-10-alexander.stein@ew.tq-group.com>
On Thu, Jan 19, 2023, at 15:42, Alexander Stein wrote:
> This is necessary to support PCIe on LS1021A.
>
> Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Can you explain why this is actually required? I can see that the
ranges in the PCIe device point to a high address (0x4000000000,
2^40), but I can't tell if this is hardwired in the SoC or a
setting that is applied by software (either the bootloader or
the PCIe driver).
If you can reprogram the memory map, I would expect this to fit
easily into the 32-bit address space, with 1GB for DDR3 memory
and 1GB for PCIe BARs.
I don't mind having a defconfig with LPAE enabled, I think this
can be done using a Makefile target that applies a config
fragment on top of the normal multi_v7_defconfig, you can find
some examples in arch/powerpc/configs/*.config.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: "Arnd Bergmann" <arnd@arndb.de>
To: "Alexander Stein" <alexander.stein@ew.tq-group.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Olof Johansson" <olof@lixom.net>,
"Shawn Guo" <shawnguo@kernel.org>, "Li Yang" <leoyang.li@nxp.com>,
"Russell King" <linux@armlinux.org.uk>,
"Marek Vasut" <marex@denx.de>,
"Marcel Ziswiler" <marcel.ziswiler@toradex.com>
Cc: soc@kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 9/9] [DNI] ARM: multi_v7_defconfig: Enable CONFIG_ARM_LPAE for multi_v7_config
Date: Thu, 19 Jan 2023 16:09:05 +0100 [thread overview]
Message-ID: <f1de9cd9-a163-4b56-adf8-319eaf85e38e@app.fastmail.com> (raw)
In-Reply-To: <20230119144236.3541751-10-alexander.stein@ew.tq-group.com>
On Thu, Jan 19, 2023, at 15:42, Alexander Stein wrote:
> This is necessary to support PCIe on LS1021A.
>
> Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Can you explain why this is actually required? I can see that the
ranges in the PCIe device point to a high address (0x4000000000,
2^40), but I can't tell if this is hardwired in the SoC or a
setting that is applied by software (either the bootloader or
the PCIe driver).
If you can reprogram the memory map, I would expect this to fit
easily into the 32-bit address space, with 1GB for DDR3 memory
and 1GB for PCIe BARs.
I don't mind having a defconfig with LPAE enabled, I think this
can be done using a Makefile target that applies a config
fragment on top of the normal multi_v7_defconfig, you can find
some examples in arch/powerpc/configs/*.config.
Arnd
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-01-19 15:09 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-19 14:42 [PATCH 0/9] TQMLS1021A support Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 1/9] dt-bindings: arm: fsl: add TQ-Systems LS1021A board Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 16:59 ` Krzysztof Kozlowski
2023-01-19 16:59 ` Krzysztof Kozlowski
2023-01-20 8:58 ` Alexander Stein
2023-01-20 8:58 ` Alexander Stein
2023-01-20 9:07 ` Krzysztof Kozlowski
2023-01-20 9:07 ` Krzysztof Kozlowski
2023-01-19 14:42 ` [PATCH 2/9] ARM: dts: ls1021a: add TQ-Systems MBLS102xA device tree Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 17:03 ` Krzysztof Kozlowski
2023-01-19 17:03 ` Krzysztof Kozlowski
2023-01-20 10:08 ` Alexander Stein
2023-01-20 10:08 ` Alexander Stein
2023-01-20 10:21 ` Krzysztof Kozlowski
2023-01-20 10:21 ` Krzysztof Kozlowski
2023-01-19 14:42 ` [PATCH 3/9] ARM: dts: ls1021a: add TQMLS1021A flash partition layout Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 4/9] ARM: dts: ls1021a: add TQMLS1021A/MBLS102xA LVDS TM070JVHG33 overlay Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 5/9] ARM: dts: ls1021a: add TQMLS1021A/MBLS102xA HDMI overlay Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 6/9] ARM: dts: ls1021a: add TQMLS1021A/MBLS102xA LVDS CDTECH DC44 overlay Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 7/9] ARM: dts: ls1021a: add TQMLS1021A/MBLS102xA LVDS CDTECH FC21 overlay Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 14:42 ` [PATCH 8/9] ARM: multi_v7_defconfig: Add options to support TQMLS102xA series Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 17:04 ` Krzysztof Kozlowski
2023-01-19 17:04 ` Krzysztof Kozlowski
2023-01-20 11:12 ` Alexander Stein
2023-01-20 11:12 ` Alexander Stein
2023-01-20 11:35 ` Krzysztof Kozlowski
2023-01-20 11:35 ` Krzysztof Kozlowski
2023-01-20 14:57 ` Russell King (Oracle)
2023-01-20 14:57 ` Russell King (Oracle)
2023-01-21 20:27 ` Krzysztof Kozlowski
2023-01-21 20:27 ` Krzysztof Kozlowski
2023-01-21 22:33 ` Russell King (Oracle)
2023-01-21 22:33 ` Russell King (Oracle)
2023-01-19 14:42 ` [PATCH 9/9] [DNI] ARM: multi_v7_defconfig: Enable CONFIG_ARM_LPAE for multi_v7_config Alexander Stein
2023-01-19 14:42 ` Alexander Stein
2023-01-19 15:09 ` Arnd Bergmann [this message]
2023-01-19 15:09 ` Arnd Bergmann
2023-01-19 15:27 ` Alexander Stein
2023-01-19 15:27 ` Alexander Stein
2023-01-19 16:07 ` Arnd Bergmann
2023-01-19 16:07 ` Arnd Bergmann
2023-01-20 12:43 ` Alexander Stein
2023-01-20 12:43 ` Alexander Stein
2023-01-20 14:00 ` Arnd Bergmann
2023-01-20 14:00 ` Arnd Bergmann
2023-01-24 10:30 ` Alexander Stein
2023-01-24 10:30 ` Alexander Stein
2023-01-24 11:37 ` Arnd Bergmann
2023-01-24 11:37 ` Arnd Bergmann
2023-01-19 16:00 ` Russell King (Oracle)
2023-01-19 16:00 ` Russell King (Oracle)
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