From: "Rafał Miłecki" <zajec5@gmail.com>
To: Philipp Zabel <p.zabel@pengutronix.de>, Rob Herring <robh+dt@kernel.org>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
"Rafał Miłecki" <rafal@milecki.pl>
Subject: [PATCH 1/2] dt-bindings: reset: document Broadcom's BCM4908 PCIe reset binding
Date: Fri, 27 Nov 2020 12:14:41 +0100 [thread overview]
Message-ID: <20201127111442.1096-1-zajec5@gmail.com> (raw)
From: Rafał Miłecki <rafal@milecki.pl>
BCM4908 was built using older PCIe hardware block that requires using
external reset block controlling PERST# signals.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
.../reset/brcm,bcm4908-misc-pcie-reset.yaml | 39 +++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm4908-misc-pcie-reset.yaml
diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm4908-misc-pcie-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm4908-misc-pcie-reset.yaml
new file mode 100644
index 000000000000..88aebb370838
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm4908-misc-pcie-reset.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/brcm,bcm4908-misc-pcie-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom MISC block PCIe reset controller
+
+description: This document describes reset controller handling PCIe PERST#
+ signals. On BCM4908 it's a part of the MISC block.
+
+maintainers:
+ - Rafał Miłecki <rafal@milecki.pl>
+
+properties:
+ compatible:
+ const: brcm,bcm4908-misc-pcie-reset
+
+ reg:
+ maxItems: 1
+
+ "#reset-cells":
+ description: PCIe core id
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ reset-controller@ff802644 {
+ compatible = "brcm,bcm4908-misc-pcie-reset";
+ reg = <0xff802644 0x04>;
+ #reset-cells = <1>;
+ };
--
2.26.2
next reply other threads:[~2020-11-27 11:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-27 11:14 Rafał Miłecki [this message]
2020-11-27 11:14 ` [PATCH 2/2] reset: simple: add BCM4908 MISC PCIe reset controller support Rafał Miłecki
2020-11-28 5:10 ` Florian Fainelli
2020-11-28 5:09 ` [PATCH 1/2] dt-bindings: reset: document Broadcom's BCM4908 PCIe reset binding Florian Fainelli
2020-12-08 19:46 ` Rob Herring
2020-12-09 11:06 ` Philipp Zabel
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