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From: Kevin Brodsky <kevin.brodsky@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org, Pawel Moll <pawel.moll@arm.com>,
	Ruben Ayrapetyan <ruben.ayrapetyan@arm.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Kevin Brodsky <kevin.brodsky@arm.com>,
	Liviu Dudau <liviu.dudau@arm.com>,
	dri-devel@lists.freedesktop.org,
	Sudeep Holla <sudeep.holla@arm.com>,
	Brian Starkey <brian.starkey@arm.com>
Subject: [PATCH] arm64: dts: fast models: Increase clcd's max-memory-bandwidth
Date: Thu, 25 Jul 2019 15:50:40 +0100	[thread overview]
Message-ID: <20190725145040.42182-1-kevin.brodsky@arm.com> (raw)

It may be desirable on certain platforms, such as Android, to
use 32bpp buffers. Since there is no clear bandwidth limit for the
CLCD component on the fast model, let's increase
max-memory-bandwidth to allow using 32bpp buffers.

Reported-by: Ruben Ayrapetyan <ruben.ayrapetyan@arm.com>
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
---
 arch/arm64/boot/dts/arm/fvp-base-revc.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
index 687707020ec1..3aee49ed6d88 100644
--- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts
+++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
@@ -269,7 +269,7 @@
 		motherboard {
 			iofpga@3,00000000 {
 				clcd@1f0000 {
-					max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */
+					max-memory-bandwidth = <260000000>; /* 32bpp @ 63.5MHz */
 				};
 			};
 		};
-- 
2.22.0

WARNING: multiple messages have this Message-ID (diff)
From: Kevin Brodsky <kevin.brodsky@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org, Pawel Moll <pawel.moll@arm.com>,
	Ruben Ayrapetyan <ruben.ayrapetyan@arm.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Kevin Brodsky <kevin.brodsky@arm.com>,
	Liviu Dudau <liviu.dudau@arm.com>,
	dri-devel@lists.freedesktop.org,
	Sudeep Holla <sudeep.holla@arm.com>,
	Brian Starkey <brian.starkey@arm.com>
Subject: [PATCH] arm64: dts: fast models: Increase clcd's max-memory-bandwidth
Date: Thu, 25 Jul 2019 15:50:40 +0100	[thread overview]
Message-ID: <20190725145040.42182-1-kevin.brodsky@arm.com> (raw)

It may be desirable on certain platforms, such as Android, to
use 32bpp buffers. Since there is no clear bandwidth limit for the
CLCD component on the fast model, let's increase
max-memory-bandwidth to allow using 32bpp buffers.

Reported-by: Ruben Ayrapetyan <ruben.ayrapetyan@arm.com>
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
---
 arch/arm64/boot/dts/arm/fvp-base-revc.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
index 687707020ec1..3aee49ed6d88 100644
--- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts
+++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
@@ -269,7 +269,7 @@
 		motherboard {
 			iofpga@3,00000000 {
 				clcd@1f0000 {
-					max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */
+					max-memory-bandwidth = <260000000>; /* 32bpp @ 63.5MHz */
 				};
 			};
 		};
-- 
2.22.0


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             reply	other threads:[~2019-07-25 14:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-25 14:50 Kevin Brodsky [this message]
2019-07-25 14:50 ` [PATCH] arm64: dts: fast models: Increase clcd's max-memory-bandwidth Kevin Brodsky
2019-07-25 15:15 ` Robin Murphy
2019-07-25 15:15   ` Robin Murphy
2019-07-25 16:58   ` Kevin Brodsky
2019-07-25 16:58     ` Kevin Brodsky
2019-08-05 10:18   ` Linus Walleij
2019-08-05 10:18     ` Linus Walleij

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