linux-kernel - [PATCH 1/3] dt-bindings: spi: Document bcm2711 and bcm7211 SPI compatible

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Date:   Wed,  3 Jun 2020 20:46:53 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM
        BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE...),
        linux-spi@...r.kernel.org (open list:SPI SUBSYSTEM),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-rpi-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        Martin Sperl <kernel@...tin.sperl.org>, lukas@...ner.de
Subject: [PATCH 1/3] dt-bindings: spi: Document bcm2711 and bcm7211 SPI compatible

The BCM2711 and BCM7211 chips use the BCM2835 SPI controller, but there
are severl instances of those in the system and they all share the same
interrupt line. Document specific compatible strings such that the
driver can take appropriate actions.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt
index f11f295c8450..3d55dd64b1be 100644
--- a/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt
+++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt
@@ -5,7 +5,8 @@ SPI0, and the other known as the "Universal SPI Master"; part of the
 auxiliary block. This binding applies to the SPI0 controller.
 
 Required properties:
-- compatible: Should be "brcm,bcm2835-spi".
+- compatible: Should be one of "brcm,bcm2835-spi" for BCM2835/2836/2837 or
+  "brcm,bcm2711-spi" for BCM2711 or "brcm,bcm7211-spi" for BCM7211.
 - reg: Should contain register location and length.
 - interrupts: Should contain interrupt.
 - clocks: The clock feeding the SPI controller.
-- 
2.17.1