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From: Florian Fainelli <f.fainelli@gmail.com>
To: bcm-kernel-feedback-list@broadcom.com
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Brian Norris <computersforpeace@gmail.com>,
	Gregory Fong <gregory.0xf0@gmail.com>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM
	BCM7XXX ARM ARCHITECTURE),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 2/9] dt-bindings: arm: brcmstb: Correct BIUCTRL node documentation
Date: Wed, 29 Nov 2017 12:18:42 -0800	[thread overview]
Message-ID: <20171129201849.17522-3-f.fainelli@gmail.com> (raw)
In-Reply-To: <20171129201849.17522-1-f.fainelli@gmail.com>

Correct the Device Tree bindings for the HIF_CPUBIUCTRL node whose
compatible string is actually brcm,bcm<chip-id>-cpu-biu-ctrl. Also
document in the binding the fallback property
("brcm,brcmstb-cpu-biu-ctrl") and update the example accordingly.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 .../devicetree/bindings/arm/bcm/brcm,brcmstb.txt   | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
index 790e6b0b8306..05be8d1f7be6 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt
@@ -17,21 +17,23 @@ Further, syscon nodes that map platform-specific registers used for general
 system control is required:
 
     - compatible: "brcm,bcm<chip_id>-sun-top-ctrl", "syscon"
-    - compatible: "brcm,bcm<chip_id>-hif-cpubiuctrl", "syscon"
+    - compatible: "brcm,bcm<chip_id>-cpu-biu-ctrl",
+		  "brcm,brcmstb-cpu-biu-ctrl",
+		  "syscon"
     - compatible: "brcm,bcm<chip_id>-hif-continuation", "syscon"
 
-hif-cpubiuctrl node
+cpu-biu-ctrl node
 -------------------
-SoCs with Broadcom Brahma15 ARM-based CPUs have a specific Bus Interface Unit
-(BIU) block which controls and interfaces the CPU complex to the different
-Memory Controller Ports (MCP), one per memory controller (MEMC). This BIU block
-offers a feature called Write Pairing which consists in collapsing two adjacent
-cache lines into a single (bursted) write transaction towards the memory
-controller (MEMC) to maximize write bandwidth.
+SoCs with Broadcom Brahma15 ARM-based and Brahma53 ARM64-based CPUs have a
+specific Bus Interface Unit (BIU) block which controls and interfaces the CPU
+complex to the different Memory Controller Ports (MCP), one per memory
+controller (MEMC). This BIU block offers a feature called Write Pairing which
+consists in collapsing two adjacent cache lines into a single (bursted) write
+transaction towards the memory controller (MEMC) to maximize write bandwidth.
 
 Required properties:
 
-    - compatible: must be "brcm,bcm7445-hif-cpubiuctrl", "syscon"
+    - compatible: must be "brcm,bcm7445-cpu-biu-ctrl", "syscon"
 
 Optional properties:
 
@@ -52,7 +54,7 @@ example:
         };
 
         hif_cpubiuctrl: syscon@3e2400 {
-            compatible = "brcm,bcm7445-hif-cpubiuctrl", "syscon";
+            compatible = "brcm,bcm7445-cpu-biu-ctrl", "brcm,brcmstb-cpu-biu-ctrl", "syscon";
             reg = <0x3e2400 0x5b4>;
             brcm,write-pairing;
         };
-- 
2.9.3

  parent reply	other threads:[~2017-11-29 20:21 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-29 20:18 [PATCH 0/9] soc: brcmstb: biuctrl updates for 64-bit chips Florian Fainelli
2017-11-29 20:18 ` [PATCH 1/9] dt-bindings: arm: Add entry for Broadcom Brahma-B53 Florian Fainelli
2017-12-01  2:18   ` Rob Herring
2017-11-29 20:18 ` Florian Fainelli [this message]
2017-12-01  2:21   ` [PATCH 2/9] dt-bindings: arm: brcmstb: Correct BIUCTRL node documentation Rob Herring
2017-11-29 20:18 ` [PATCH 3/9] soc: brcmstb: Make CPU credit offset more parameterized Florian Fainelli
2017-11-29 20:18 ` [PATCH 4/9] soc: brcmstb: Correct CPU_CREDIT_REG offset for Brahma-B53 CPUs Florian Fainelli
2017-11-29 20:18 ` [PATCH 5/9] soc: brcmstb: biuctrl: Prepare for saving/restoring other registers Florian Fainelli
2017-11-29 20:18 ` [PATCH 6/9] soc: brcmstb: biuctrl: Wire-up new registers Florian Fainelli
2017-11-29 20:18 ` [PATCH 7/9] soc: brcmstb: biuctrl: Fine tune B53 MCP interface settings Florian Fainelli
2017-11-29 20:18 ` [PATCH 8/9] soc: brcmstb: Split initialization Florian Fainelli
2017-11-29 20:18 ` [PATCH 9/9] soc: brcmstb: biuctrl: Move to early_initcall Florian Fainelli

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