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From: Hector Martin <marcan@marcan.st>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh@kernel.org>,
	Arnd Bergmann <arnd@kernel.org>, Olof Johansson <olof@lixom.net>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Mark Kettenis <mark.kettenis@xs4all.nl>,
	Tony Lindgren <tony@atomide.com>,
	Mohamed Mediouni <mohamed.mediouni@caramail.com>,
	Stan Skowronek <stan@corellium.com>,
	Alexander Graf <graf@amazon.com>, Will Deacon <will@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christoph Hellwig <hch@infradead.org>,
	"David S. Miller" <davem@davemloft.net>,
	devicetree <devicetree@vger.kernel.org>,
	"open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>,
	Linux Documentation List <linux-doc@vger.kernel.org>,
	Linux Samsung SOC <linux-samsung-soc@vger.kernel.org>,
	Linux-Arch <linux-arch@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFT PATCH v3 12/27] of/address: Add infrastructure to declare MMIO as non-posted
Date: Sat, 6 Mar 2021 00:55:39 +0900	[thread overview]
Message-ID: <04ea35d6-cd7d-d6de-75ae-59b1e0c77f04@marcan.st> (raw)
In-Reply-To: <CAHp75VdGYDDCRBRmd3O3Mt1opgDdwuRBoS1E=vaVc45h9eR-0w@mail.gmail.com>

On 06/03/2021 00.13, Andy Shevchenko wrote:
>> @@ -896,7 +899,10 @@ void __iomem *of_iomap(struct device_node *np, int index)
>>          if (of_address_to_resource(np, index, &res))
>>                  return NULL;
>>
>> -       return ioremap(res.start, resource_size(&res));
>> +       if (res.flags & IORESOURCE_MEM_NONPOSTED)
>> +               return ioremap_np(res.start, resource_size(&res));
>> +       else
>> +               return ioremap(res.start, resource_size(&res));
> 
> This doesn't sound right. Why _np is so exceptional? Why don't we have
> other flavours (it also rings a bell to my previous comment that the
> flag in ioresource is not in the right place)?

This is different from other variants, because until now *drivers* have 
made the choice of what ioremap mode to use based on device requirements 
(which means ioremap() 99% of the time, and then framebuffers and other 
memory-ish things such use something else). Now we have a *SoC fabric* 
that is calling the shots on what ioremap mode we have to use - and 
*every* non-PCIe driver needs to use ioremap_np() on these SoCs, or they 
break. So it seems a lot cleaner to make the choice for drivers here to 
upgrade ioremap() to ioremap_np() for SoCs that need it.

If we don't do something like this here or in otherwise common code, 
we'd have to have an open-coded "if apple then ioremap_np, else ioremap" 
in every driver that runs on-die devices on these SoCs, even ones that 
are otherwise standard and need few or no Apple-specific quirks.

We're still going to have to patch some drivers to use managed APIs that 
can properly hit this conditional (like I did for samsung_tty) in cases 
where they currently don't, but that's a lot cleaner than an open-coded 
conditional, I think (and often comes with other benefits anyway).

Note that wholesale making ioremap() behave like ioremap_np() at the 
arch level as as SoC quirk is not an option - for extenal PCIe devices, 
we still need to use ioremap(). We tried this approach initially but it 
doesn't work. Hence we arrived at this solution which describes the 
required mode in the devicetree, at the bus level (which makes sense, 
since that represents the fabric), and then these wrappers can use that 
information, carried over via the bit in struct device, to pick the 
right ioremap mode.

It doesn't really make sense to include the other variants here, because 
_np is strictly stronger than the default. Downgrading ioremap to any 
other variant would break most drivers, badly. However, upgrading to 
ioremap_np() is always correct (if possibly slower), on platforms where 
it is allowed by the bus. In fact, I bet that on many systems nGnRE 
already behaves like nGnRnE anyway. I don't know why Apple didn't just 
allow nGnRE mappings to work (behaving like nGnRnE) instead of making 
them explode, which is the whole reason we have to do this.

>> +       while (node) {
>> +               if (!of_property_read_bool(node, "ranges")) {
>> +                       break;
>> +               } else if (of_property_read_bool(node, "nonposted-mmio")) {
>> +                       of_node_put(node);
>> +                       return true;
>> +               } else if (of_property_read_bool(node, "posted-mmio")) {
>> +                       break;
>> +               }
>> +               parent = of_get_parent(node);
>> +               of_node_put(node);
>> +               node = parent;
>> +       }
> 
> I believe above can be slightly optimized. Don't we have helpers to
> traverse to all parents?

Keep in mind the logic here is that it stops on the first instance of 
either property, and does not traverse non-translatable boundaries. Are 
there helpers that can implement this kind of complex logic? It's not a 
simple recursive property lookup.

-- 
Hector Martin (marcan@marcan.st)
Public Key: https://mrcn.st/pub

WARNING: multiple messages have this Message-ID
From: Hector Martin <marcan@marcan.st>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh@kernel.org>,
	Arnd Bergmann <arnd@kernel.org>, Olof Johansson <olof@lixom.net>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Mark Kettenis <mark.kettenis@xs4all.nl>,
	Tony Lindgren <tony@atomide.com>,
	Mohamed Mediouni <mohamed.mediouni@caramail.com>,
	Stan Skowronek <stan@corellium.com>,
	Alexander Graf <graf@amazon.com>, Will Deacon <will@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christoph Hellwig <hch@infradead.org>,
	"David S. Miller" <davem@davemloft.net>,
	devicetree <devicetree@vger.kernel.org>,
	"open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>,
	Linux Documentation List <linux-doc@vger.kernel.org>,
	Linux Samsung SOC <linux-samsung-soc@vger.kernel.org>,
	Linux-Arch <linux-arch@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFT PATCH v3 12/27] of/address: Add infrastructure to declare MMIO as non-posted
Date: Sat, 6 Mar 2021 00:55:39 +0900	[thread overview]
Message-ID: <04ea35d6-cd7d-d6de-75ae-59b1e0c77f04@marcan.st> (raw)
In-Reply-To: <CAHp75VdGYDDCRBRmd3O3Mt1opgDdwuRBoS1E=vaVc45h9eR-0w@mail.gmail.com>

On 06/03/2021 00.13, Andy Shevchenko wrote:
>> @@ -896,7 +899,10 @@ void __iomem *of_iomap(struct device_node *np, int index)
>>          if (of_address_to_resource(np, index, &res))
>>                  return NULL;
>>
>> -       return ioremap(res.start, resource_size(&res));
>> +       if (res.flags & IORESOURCE_MEM_NONPOSTED)
>> +               return ioremap_np(res.start, resource_size(&res));
>> +       else
>> +               return ioremap(res.start, resource_size(&res));
> 
> This doesn't sound right. Why _np is so exceptional? Why don't we have
> other flavours (it also rings a bell to my previous comment that the
> flag in ioresource is not in the right place)?

This is different from other variants, because until now *drivers* have 
made the choice of what ioremap mode to use based on device requirements 
(which means ioremap() 99% of the time, and then framebuffers and other 
memory-ish things such use something else). Now we have a *SoC fabric* 
that is calling the shots on what ioremap mode we have to use - and 
*every* non-PCIe driver needs to use ioremap_np() on these SoCs, or they 
break. So it seems a lot cleaner to make the choice for drivers here to 
upgrade ioremap() to ioremap_np() for SoCs that need it.

If we don't do something like this here or in otherwise common code, 
we'd have to have an open-coded "if apple then ioremap_np, else ioremap" 
in every driver that runs on-die devices on these SoCs, even ones that 
are otherwise standard and need few or no Apple-specific quirks.

We're still going to have to patch some drivers to use managed APIs that 
can properly hit this conditional (like I did for samsung_tty) in cases 
where they currently don't, but that's a lot cleaner than an open-coded 
conditional, I think (and often comes with other benefits anyway).

Note that wholesale making ioremap() behave like ioremap_np() at the 
arch level as as SoC quirk is not an option - for extenal PCIe devices, 
we still need to use ioremap(). We tried this approach initially but it 
doesn't work. Hence we arrived at this solution which describes the 
required mode in the devicetree, at the bus level (which makes sense, 
since that represents the fabric), and then these wrappers can use that 
information, carried over via the bit in struct device, to pick the 
right ioremap mode.

It doesn't really make sense to include the other variants here, because 
_np is strictly stronger than the default. Downgrading ioremap to any 
other variant would break most drivers, badly. However, upgrading to 
ioremap_np() is always correct (if possibly slower), on platforms where 
it is allowed by the bus. In fact, I bet that on many systems nGnRE 
already behaves like nGnRnE anyway. I don't know why Apple didn't just 
allow nGnRE mappings to work (behaving like nGnRnE) instead of making 
them explode, which is the whole reason we have to do this.

>> +       while (node) {
>> +               if (!of_property_read_bool(node, "ranges")) {
>> +                       break;
>> +               } else if (of_property_read_bool(node, "nonposted-mmio")) {
>> +                       of_node_put(node);
>> +                       return true;
>> +               } else if (of_property_read_bool(node, "posted-mmio")) {
>> +                       break;
>> +               }
>> +               parent = of_get_parent(node);
>> +               of_node_put(node);
>> +               node = parent;
>> +       }
> 
> I believe above can be slightly optimized. Don't we have helpers to
> traverse to all parents?

Keep in mind the logic here is that it stops on the first instance of 
either property, and does not traverse non-translatable boundaries. Are 
there helpers that can implement this kind of complex logic? It's not a 
simple recursive property lookup.

-- 
Hector Martin (marcan@marcan.st)
Public Key: https://mrcn.st/pub

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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
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  reply	other threads:[~2021-03-05 15:56 UTC|newest]

Thread overview: 275+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-04 21:38 [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
2021-03-04 21:38 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 01/27] arm64: Cope with CPUs stuck in VHE mode Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:05   ` Will Deacon
2021-03-24 18:05     ` Will Deacon
2021-03-24 20:00     ` Marc Zyngier
2021-03-24 20:00       ` Marc Zyngier
2021-03-26  7:54       ` Hector Martin
2021-03-26  7:54         ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 02/27] dt-bindings: vendor-prefixes: Add apple prefix Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 20:26   ` Rob Herring
2021-03-08 20:26     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 03/27] dt-bindings: arm: apple: Add bindings for Apple ARM platforms Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:16   ` Linus Walleij
2021-03-05 10:16     ` Linus Walleij
2021-03-08 20:27   ` Rob Herring
2021-03-08 20:27     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple,firestorm & icestorm compatibles Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple, firestorm " Hector Martin
2021-03-08 20:27   ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple,firestorm " Rob Herring
2021-03-08 20:27     ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple, firestorm " Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 05/27] arm64: cputype: Add CPU implementor & types for the Apple M1 cores Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:13   ` Will Deacon
2021-03-24 18:13     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: Add interrupt-names support Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Hector Martin
2021-03-05 10:18   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Linus Walleij
2021-03-05 10:18     ` Linus Walleij
2021-03-08 11:12   ` Marc Zyngier
2021-03-08 11:12     ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-08 17:14   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Tony Lindgren
2021-03-08 17:14     ` Tony Lindgren
2021-03-08 20:38   ` Rob Herring
2021-03-08 20:38     ` Rob Herring
2021-03-08 22:42     ` Marc Zyngier
2021-03-08 22:42       ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-09 16:11       ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Rob Herring
2021-03-09 16:11         ` Rob Herring
2021-03-09 20:28         ` Hector Martin
2021-03-09 20:28           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 07/27] arm64: arch_timer: implement support for interrupt-names Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:19   ` Linus Walleij
2021-03-05 10:19     ` Linus Walleij
2021-03-08 11:13   ` Marc Zyngier
2021-03-08 11:13     ` Marc Zyngier
2021-03-04 21:38 ` [RFT PATCH v3 08/27] asm-generic/io.h: Add a non-posted variant of ioremap() Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 14:45   ` Andy Shevchenko
2021-03-05 14:45     ` Andy Shevchenko
2021-03-05 15:19     ` Hector Martin
2021-03-05 15:19       ` Hector Martin
2021-03-08 11:20   ` Marc Zyngier
2021-03-08 11:20     ` Marc Zyngier
2021-03-24 18:12   ` Will Deacon
2021-03-24 18:12     ` Will Deacon
2021-03-24 19:09     ` Arnd Bergmann
2021-03-24 19:09       ` Arnd Bergmann
2021-03-25 14:07       ` Hector Martin
2021-03-25 14:07         ` Hector Martin
2021-03-25 14:49         ` Will Deacon
2021-03-25 14:49           ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 09/27] docs: driver-api: device-io: Document I/O access functions Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:22   ` Linus Walleij
2021-03-05 10:22     ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 10/27] docs: driver-api: device-io: Document ioremap() variants & access funcs Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:25   ` Linus Walleij
2021-03-05 10:25     ` Linus Walleij
2021-03-05 15:09     ` Andy Shevchenko
2021-03-05 15:09       ` Andy Shevchenko
2021-03-05 15:51       ` Arnd Bergmann
2021-03-05 15:51         ` Arnd Bergmann
2021-03-09 20:29         ` Hector Martin
2021-03-09 20:29           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 11:22   ` Marc Zyngier
2021-03-08 11:22     ` Marc Zyngier
2021-03-24 18:18   ` Will Deacon
2021-03-24 18:18     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 12/27] of/address: Add infrastructure to declare MMIO as non-posted Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:28   ` Linus Walleij
2021-03-05 10:28     ` Linus Walleij
2021-03-05 15:13   ` Andy Shevchenko
2021-03-05 15:13     ` Andy Shevchenko
2021-03-05 15:55     ` Hector Martin [this message]
2021-03-05 15:55       ` Hector Martin
2021-03-05 16:08       ` Andy Shevchenko
2021-03-05 16:08         ` Andy Shevchenko
2021-03-05 16:43         ` Arnd Bergmann
2021-03-05 16:43           ` Arnd Bergmann
2021-03-05 17:19           ` Hector Martin
2021-03-05 17:19             ` Hector Martin
2021-03-05 16:05     ` Rob Herring
2021-03-05 16:05       ` Rob Herring
2021-03-05 17:39   ` Rob Herring
2021-03-05 17:39     ` Rob Herring
2021-03-05 18:18     ` Hector Martin
2021-03-05 18:18       ` Hector Martin
2021-03-05 21:17       ` Arnd Bergmann
2021-03-05 21:17         ` Arnd Bergmann
2021-03-08 15:56         ` Rob Herring
2021-03-08 15:56           ` Rob Herring
2021-03-08 20:29           ` Arnd Bergmann
2021-03-08 20:29             ` Arnd Bergmann
2021-03-08 21:13             ` Rob Herring
2021-03-08 21:13               ` Rob Herring
2021-03-08 21:56               ` Arnd Bergmann
2021-03-08 21:56                 ` Arnd Bergmann
2021-03-09 15:48                 ` Rob Herring
2021-03-09 15:48                   ` Rob Herring
2021-03-09 20:23                   ` Hector Martin
2021-03-09 20:23                     ` Hector Martin
2021-03-09 22:06                     ` Rob Herring
2021-03-09 22:06                       ` Rob Herring
2021-03-10  8:26                       ` Hector Martin
2021-03-10  8:26                         ` Hector Martin
2021-03-10 17:01                         ` Rob Herring
2021-03-10 17:01                           ` Rob Herring
2021-03-11  9:12                           ` Arnd Bergmann
2021-03-11  9:12                             ` Arnd Bergmann
2021-03-11 12:11                             ` Hector Martin
2021-03-11 12:11                               ` Hector Martin
2021-03-11 13:35                               ` Arnd Bergmann
2021-03-11 13:35                                 ` Arnd Bergmann
2021-03-11 16:07                             ` Rob Herring
2021-03-11 16:07                               ` Rob Herring
2021-03-11 16:48                               ` Arnd Bergmann
2021-03-11 16:48                                 ` Arnd Bergmann
2021-03-11 18:10                                 ` Rob Herring
2021-03-11 18:10                                   ` Rob Herring
2021-03-12 10:20                                   ` Arnd Bergmann
2021-03-12 10:20                                     ` Arnd Bergmann
2021-03-09 11:14               ` Linus Walleij
2021-03-09 11:14                 ` Linus Walleij
2021-03-09 12:41                 ` Arnd Bergmann
2021-03-09 12:41                   ` Arnd Bergmann
2021-03-09 15:40                   ` Linus Walleij
2021-03-09 15:40                     ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 13/27] arm64: Add Apple vendor-specific system registers Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:38   ` Will Deacon
2021-03-24 18:38     ` Will Deacon
2021-03-24 18:59     ` Mark Rutland
2021-03-24 18:59       ` Mark Rutland
2021-03-24 19:04       ` Will Deacon
2021-03-24 19:04         ` Will Deacon
2021-03-26  6:23         ` Hector Martin
2021-03-26  6:23           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 14/27] arm64: move ICH_ sysreg bits from arm-gic-v3.h to sysreg.h Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 11:39   ` Marc Zyngier
2021-03-08 11:39     ` Marc Zyngier
2021-03-24 18:23   ` Will Deacon
2021-03-24 18:23     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 15/27] dt-bindings: interrupt-controller: Add DT bindings for apple-aic Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 21:16   ` Rob Herring
2021-03-08 21:16     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 16/27] irqchip/apple-aic: Add support for the Apple Interrupt Controller Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 15:05   ` Andy Shevchenko
2021-03-05 15:05     ` Andy Shevchenko
2021-03-08 11:50     ` Marc Zyngier
2021-03-08 11:50       ` Marc Zyngier
2021-03-08 12:02       ` Andy Shevchenko
2021-03-08 12:02         ` Andy Shevchenko
2021-03-26 13:40     ` Hector Martin
2021-03-26 13:40       ` Hector Martin
2021-03-08 13:31   ` Marc Zyngier
2021-03-08 13:31     ` Marc Zyngier
2021-03-26  7:57     ` Hector Martin
2021-03-26  7:57       ` Hector Martin
2021-03-24 19:57   ` Will Deacon
2021-03-24 19:57     ` Will Deacon
2021-03-26  8:58     ` Hector Martin
2021-03-26  8:58       ` Hector Martin
2021-03-29 12:04       ` Will Deacon
2021-03-29 12:04         ` Will Deacon
2021-04-01 13:16         ` Hector Martin
2021-04-01 13:16           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 17/27] arm64: Kconfig: Introduce CONFIG_ARCH_APPLE Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 15:35   ` Marc Zyngier
2021-03-08 15:35     ` Marc Zyngier
2021-03-09 20:30     ` Hector Martin
2021-03-09 20:30       ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 18/27] tty: serial: samsung_tty: Separate S3C64XX ops structure Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:30   ` Krzysztof Kozlowski
2021-03-05 10:30     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 19/27] tty: serial: samsung_tty: Add ucon_mask parameter Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:34   ` Krzysztof Kozlowski
2021-03-05 10:34     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 20/27] tty: serial: samsung_tty: Add s3c24xx_port_type Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:49   ` Krzysztof Kozlowski
2021-03-05 10:49     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 21/27] tty: serial: samsung_tty: IRQ rework Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:51   ` Krzysztof Kozlowski
2021-03-05 10:51     ` Krzysztof Kozlowski
2021-03-05 15:17   ` Andy Shevchenko
2021-03-05 15:17     ` Andy Shevchenko
2021-03-05 16:16     ` Hector Martin
2021-03-05 16:16       ` Hector Martin
2021-03-05 16:20       ` Andy Shevchenko
2021-03-05 16:20         ` Andy Shevchenko
2021-03-05 16:29         ` Hector Martin
2021-03-05 16:29           ` Hector Martin
2021-03-07 11:34           ` Krzysztof Kozlowski
2021-03-07 11:34             ` Krzysztof Kozlowski
2021-03-07 16:01             ` Arnd Bergmann
2021-03-07 16:01               ` Arnd Bergmann
2021-03-07 19:51               ` Krzysztof Kozlowski
2021-03-07 19:51                 ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 22/27] tty: serial: samsung_tty: Use devm_ioremap_resource Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:54   ` Krzysztof Kozlowski
2021-03-05 10:54     ` Krzysztof Kozlowski
2021-03-05 15:19     ` Andy Shevchenko
2021-03-05 15:19       ` Andy Shevchenko
2021-03-04 21:38 ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple,s5l-uart compatible Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple, s5l-uart compatible Hector Martin
2021-03-08 21:17   ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple,s5l-uart compatible Rob Herring
2021-03-08 21:17     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 24/27] tty: serial: samsung_tty: Add support for Apple UARTs Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:58   ` Krzysztof Kozlowski
2021-03-05 10:58     ` Krzysztof Kozlowski
2021-03-05 15:28   ` Andy Shevchenko
2021-03-05 15:28     ` Andy Shevchenko
2021-03-05 17:04     ` Hector Martin
2021-03-05 17:04       ` Hector Martin
2021-03-07 11:40       ` Krzysztof Kozlowski
2021-03-07 11:40         ` Krzysztof Kozlowski
2021-03-04 21:39 ` [RFT PATCH v3 25/27] tty: serial: samsung_tty: Add earlycon " Hector Martin
2021-03-04 21:39   ` Hector Martin
2021-03-05 10:55   ` Krzysztof Kozlowski
2021-03-05 10:55     ` Krzysztof Kozlowski
2021-03-10 23:11   ` Linus Walleij
2021-03-10 23:11     ` Linus Walleij
2021-03-04 21:39 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Hector Martin
2021-03-04 21:39   ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Hector Martin
2021-03-08 21:18   ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Rob Herring
2021-03-08 21:18     ` Rob Herring
2021-03-09 16:37   ` Linus Walleij
2021-03-09 16:37     ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Linus Walleij
2021-03-09 20:35     ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Hector Martin
2021-03-09 20:35       ` Hector Martin
2021-03-04 21:39 ` [RFT PATCH v3 27/27] arm64: apple: Add initial Apple Mac mini (M1, 2020) devicetree Hector Martin
2021-03-04 21:39   ` Hector Martin
2021-03-05 11:03   ` Krzysztof Kozlowski
2021-03-05 11:03     ` Krzysztof Kozlowski
2021-03-05 11:14     ` Hector Martin
2021-03-05 11:14       ` Hector Martin
2021-03-05 11:45       ` Krzysztof Kozlowski
2021-03-05 11:45         ` Krzysztof Kozlowski
2021-03-05 15:59       ` Mark Kettenis
2021-03-05 15:59         ` Mark Kettenis
2021-03-05 16:50         ` Hector Martin
2021-03-05 16:50           ` Hector Martin
2021-03-13 20:22   ` Konrad Dybcio
2021-04-05  5:50     ` Hector Martin
2021-04-06  7:14       ` Arnd Bergmann
2021-03-05 10:11 ` [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
2021-03-05 10:11   ` Hector Martin

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