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From:   Serge Semin <Sergey.Semin@baikalelectronics.ru>
To:     Damien Le Moal <damien.lemoal@opensource.wdc.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Jens Axboe <axboe@kernel.dk>, Hannes Reinecke <hare@suse.de>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>
CC:     Serge Semin <Sergey.Semin@baikalelectronics.ru>,
        Serge Semin <fancer.lancer@gmail.com>,
        Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
        <linux-ide@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <devicetree@vger.kernel.org>, Rob Herring <robh@kernel.org>
Subject: [PATCH v8 01/23] dt-bindings: ata: ahci-platform: Move dma-coherent to sata-common.yaml
Date:   Fri, 9 Sep 2022 22:35:59 +0300
Message-ID: <20220909193621.17380-2-Sergey.Semin@baikalelectronics.ru>
In-Reply-To: <20220909193621.17380-1-Sergey.Semin@baikalelectronics.ru>
References: <20220909193621.17380-1-Sergey.Semin@baikalelectronics.ru>
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Seeing doubtfully any SATA device working without embedded DMA engine
let's permit the device nodes being equipped with the dma-coherent
property in case if the platform is capable of cache-coherent DMAs.

As a side-effect we can drop the explicit dma-coherent property definition
from the particular device schemas. Currently it concerns the Broadcom
SATA AHCI controller only.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>

---

Changelog v2:
- This is a new patch created after rebasing v1 onto the 5.18-rc3 kernel.

Changelog v4:
- Move the dma-coherent property to the sata-common.yaml schema instead
  of removing it.
- Remove the Hannes' rb tag.
---
 Documentation/devicetree/bindings/ata/ahci-platform.yaml  | 2 --
 Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml | 2 --
 Documentation/devicetree/bindings/ata/sata-common.yaml    | 2 ++
 3 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.yaml b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
index c146ab8e14e5..9304e4731965 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.yaml
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
@@ -87,8 +87,6 @@ properties:
     description:
       regulator for AHCI controller
 
-  dma-coherent: true
-
   phy-supply:
     description:
       regulator for PHY power
diff --git a/Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml b/Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml
index 235a93ac86b0..4ee74df8e58a 100644
--- a/Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml
+++ b/Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml
@@ -41,8 +41,6 @@ properties:
   interrupts:
     maxItems: 1
 
-  dma-coherent: true
-
 if:
   properties:
     compatible:
diff --git a/Documentation/devicetree/bindings/ata/sata-common.yaml b/Documentation/devicetree/bindings/ata/sata-common.yaml
index 7ac77b1c5850..cb88d3e25e73 100644
--- a/Documentation/devicetree/bindings/ata/sata-common.yaml
+++ b/Documentation/devicetree/bindings/ata/sata-common.yaml
@@ -31,6 +31,8 @@ properties:
   "#size-cells":
     const: 0
 
+  dma-coherent: true
+
 patternProperties:
   "^sata-port@[0-9a-e]$":
     description: |
-- 
2.37.2