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[62.107.28.193]) by smtp.googlemail.com with ESMTPSA id z6sm11326993wml.41.2020.07.30.12.58.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jul 2020 12:58:10 -0700 (PDT) From: Bruno Thomsen To: netdev Cc: Bruno Thomsen , Andrew Lunn , Fabio Estevam , Florian Fainelli , Russell King - ARM Linux , Heiner Kallweit , Lars Alex Pedersen , Bruno Thomsen Subject: [PATCH v2 1/4 net-next] dt-bindings: net: mdio: add reset-post-delay-us property Date: Thu, 30 Jul 2020 21:57:46 +0200 Message-Id: <20200730195749.4922-2-bruno.thomsen@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200730195749.4922-1-bruno.thomsen@gmail.com> References: <20200730195749.4922-1-bruno.thomsen@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add "reset-post-delay-us" parameter to MDIO bus properties, so it's possible to add a delay after reset deassert. This is optional in case external hardware slows down release of the reset signal. Signed-off-by: Bruno Thomsen Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli --- Documentation/devicetree/bindings/net/mdio.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/net/mdio.yaml b/Documentation/devicetree/bindings/net/mdio.yaml index d6a3bf8550eb..26afb556dfae 100644 --- a/Documentation/devicetree/bindings/net/mdio.yaml +++ b/Documentation/devicetree/bindings/net/mdio.yaml @@ -39,6 +39,13 @@ properties: and must therefore be appropriately determined based on all devices requirements (maximum value of all per-device RESET pulse widths). + reset-post-delay-us: + description: + Delay after reset deassert in microseconds. It applies to all MDIO + devices and it's determined by how fast all devices are ready for + communication. This delay happens just before e.g. Ethernet PHY + type ID auto detection. + clock-frequency: description: Desired MDIO bus clock frequency in Hz. Values greater than IEEE 802.3