From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: f.fainelli@gmail.com, gregkh@linuxfoundation.org,
wahrenst@gmx.net, robh@kernel.org, mathias.nyman@linux.intel.com,
Eric Anholt <eric@anholt.net>,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-pci@vger.kernel.org, linux-usb@vger.kernel.org,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>
Cc: linux-kernel@vger.kernel.org, tim.gover@raspberrypi.org,
helgaas@kernel.org, lorenzo.pieralisi@arm.com,
Rob Herring <robh+dt@kernel.org>
Subject: [PATCH 1/9] dt-bindings: reset: Add a binding for the RPi Firmware USB reset
Date: Mon, 8 Jun 2020 21:26:53 +0200 [thread overview]
Message-ID: <20200608192701.18355-2-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20200608192701.18355-1-nsaenzjulienne@suse.de>
The firmware running on the RPi VideoCore can be used to reset and
initialize the board's xHCI controller. The reset controller is passed
to the PCI device through the DT, hence this binding.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
index b48ed875eb8e..8f9d0986c28f 100644
--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
@@ -39,6 +39,22 @@ properties:
- compatible
- "#clock-cells"
+ usb-reset:
+ type: object
+
+ properties:
+ compatible:
+ const: raspberrypi,firmware-usb-reset
+
+ "#clock-cells":
+ const: 0
+ description: >
+ There is only one reset line available, so no need for cell decoding.
+
+ required:
+ - compatible
+ - "#reset-cells"
+
additionalProperties: false
required:
@@ -55,5 +71,10 @@ examples:
compatible = "raspberrypi,firmware-clocks";
#clock-cells = <1>;
};
+
+ usb_reset: usb-reset {
+ compatible = "raspberrypi,firmware-usb-reset";
+ #reset-cells = <0>;
+ };
};
...
--
2.26.2
next prev parent reply other threads:[~2020-06-08 19:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 19:26 [PATCH 0/9] Raspberry Pi 4 USB firmware initialization rework Nicolas Saenz Julienne
2020-06-08 19:26 ` Nicolas Saenz Julienne [this message]
2020-06-08 19:58 ` [PATCH 1/9] dt-bindings: reset: Add a binding for the RPi Firmware USB reset Florian Fainelli
2020-06-09 11:14 ` Nicolas Saenz Julienne
2020-06-08 19:26 ` [PATCH 2/9] reset: Add Raspberry Pi 4 firmware USB reset controller Nicolas Saenz Julienne
2020-06-08 20:13 ` Florian Fainelli
2020-06-08 19:26 ` [PATCH 3/9] ARM: dts: bcm2711: Add firmware usb reset node Nicolas Saenz Julienne
2020-06-08 19:26 ` [PATCH 4/9] ARM: dts: bcm2711: Add reset controller to xHCI node Nicolas Saenz Julienne
2020-06-08 19:26 ` [PATCH 5/9] usb: xhci-pci: Add support for reset controllers Nicolas Saenz Julienne
2020-06-08 19:43 ` Florian Fainelli
2020-06-09 11:18 ` Nicolas Saenz Julienne
2020-06-09 11:59 ` Philipp Zabel
2020-06-09 13:08 ` Nicolas Saenz Julienne
[not found] ` <CAHp75VdWq96SSzB1S9pM=H8=3np8-1Cep_9BqGiTCUTtCUt-yw@mail.gmail.com>
2020-06-09 11:19 ` Nicolas Saenz Julienne
2020-06-08 19:26 ` [PATCH 6/9] Revert "USB: pci-quirks: Add Raspberry Pi 4 quirk" Nicolas Saenz Julienne
2020-06-08 19:26 ` [PATCH 7/9] usb: host: pci-quirks: Bypass xHCI quirks for Raspberry Pi 4 Nicolas Saenz Julienne
2020-06-08 19:50 ` Florian Fainelli
2020-06-08 19:27 ` [PATCH 8/9] Revert "firmware: raspberrypi: Introduce vl805 init routine" Nicolas Saenz Julienne
2020-06-08 19:27 ` [PATCH 9/9] Revert "PCI: brcmstb: Wait for Raspberry Pi's firmware when present" Nicolas Saenz Julienne
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