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>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
"moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
open list <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 2/9] dt-bindings: arm: brcmstb: Correct BIUCTRL node documentation
Date: Tue, 19 Dec 2017 11:22:40 -0800 [thread overview]
Message-ID: <20171219192247.29799-3-f.fainelli@gmail.com> (raw)
In-Reply-To: <20171219192247.29799-1-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..ed4bf3f388a3 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", ""brcm,brcmstb-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
next prev parent reply other threads:[~2017-12-19 19:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 19:22 [PATCH v2 0/9] soc: brcmstb: biuctrl updates for 64-bit chips Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 1/9] dt-bindings: arm: Add entry for Broadcom Brahma-B53 Florian Fainelli
2017-12-19 19:22 ` Florian Fainelli [this message]
[not found] ` <20171219192247.29799-3-f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-12-20 21:24 ` [PATCH v2 2/9] dt-bindings: arm: brcmstb: Correct BIUCTRL node documentation Rob Herring
2017-12-19 19:22 ` [PATCH v2 3/9] soc: brcmstb: Make CPU credit offset more parameterized Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 4/9] soc: brcmstb: Correct CPU_CREDIT_REG offset for Brahma-B53 CPUs Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 5/9] soc: brcmstb: biuctrl: Prepare for saving/restoring other registers Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 6/9] soc: brcmstb: biuctrl: Wire-up new registers Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 7/9] soc: brcmstb: biuctrl: Fine tune B53 MCP interface settings Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 8/9] soc: brcmstb: Split initialization Florian Fainelli
2017-12-19 19:22 ` [PATCH v2 9/9] soc: brcmstb: biuctrl: Move to early_initcall Florian Fainelli
[not found] ` <20171219192247.29799-1-f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-12-21 1:38 ` [PATCH v2 0/9] soc: brcmstb: biuctrl updates for 64-bit chips Florian Fainelli
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