Linux clock framework development
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From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime.ripard@bootlin.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Mark Brown <broonie@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>,
	linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
	devicetree@vger.kernel.org, netdev@vger.kernel.org,
	Corentin Labbe <clabbe.montjoie@gmail.com>,
	Icenowy Zheng <icenowy@aosc.io>
Subject: [PATCH net-next 03/12] dt-bindings: net: dwmac-sun8i: Clean up clock delay chain descriptions
Date: Sat, 17 Mar 2018 17:28:48 +0800	[thread overview]
Message-ID: <20180317092857.4396-4-wens@csie.org> (raw)
In-Reply-To: <20180317092857.4396-1-wens@csie.org>

The clock delay chains found in the glue layer for dwmac-sun8i are only
used with RGMII PHYs. They are not intended for non-RGMII PHYs, such as
MII external PHYs or the internal PHY. Also, a recent SoC has a smaller
range of possible values for the delay chain.

This patch reformats the delay chain section of the device tree binding
to make it clear that the delay chains only apply to RGMII PHYs, and
make it easier to add the R40-specific bits later.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 Documentation/devicetree/bindings/net/dwmac-sun8i.txt | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
index 3d6d5fa0c4d5..b8a3028d6c30 100644
--- a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
+++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
@@ -28,10 +28,13 @@ Required properties:
   - allwinner,sun8i-a83t-system-controller
 
 Optional properties:
-- allwinner,tx-delay-ps: TX clock delay chain value in ps. Range value is 0-700. Default is 0)
-- allwinner,rx-delay-ps: RX clock delay chain value in ps. Range value is 0-3100. Default is 0)
-Both delay properties need to be a multiple of 100. They control the delay for
-external PHY.
+- allwinner,tx-delay-ps: TX clock delay chain value in ps.
+			 Range is 0-700. Default is 0.
+- allwinner,rx-delay-ps: RX clock delay chain value in ps.
+			 Range is 0-3100. Default is 0.
+Both delay properties need to be a multiple of 100. They control the
+clock delay for external RGMII PHY. They are do apply to the internal
+PHY or external non-RGMII PHYs.
 
 Optional properties for the following compatibles:
   - "allwinner,sun8i-h3-emac",
-- 
2.16.2

  parent reply	other threads:[~2018-03-17  9:28 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-17  9:28 [PATCH net-next 00/12] ARM: sun8i: r40: Add Ethernet support Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 01/12] clk: sunxi-ng: r40: rewrite init code to a platform driver Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 02/12] clk: sunxi-ng: r40: export a regmap to access the GMAC register Chen-Yu Tsai
2018-03-18 21:31   ` Maxime Ripard
2018-03-20  7:15     ` Chen-Yu Tsai
2018-04-03  9:48       ` Maxime Ripard
2018-04-03  9:50         ` Maxime Ripard
2018-04-03  9:52           ` Icenowy Zheng
2018-04-03  9:53           ` Chen-Yu Tsai
2018-04-03  9:54             ` Icenowy Zheng
2018-04-03  9:58               ` Chen-Yu Tsai
2018-04-03 11:36                 ` Maxime Ripard
2018-04-04  6:45           ` Icenowy Zheng
2018-04-04  7:00             ` Chen-Yu Tsai
2018-03-17  9:28 ` Chen-Yu Tsai [this message]
2018-03-18  9:21   ` [PATCH net-next 03/12] dt-bindings: net: dwmac-sun8i: Clean up clock delay chain descriptions Sergei Shtylyov
2018-03-30  9:13     ` Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 04/12] dt-bindings: net: dwmac-sun8i: Sort syscon compatibles by alphabetical order Chen-Yu Tsai
2018-03-26 22:23   ` Rob Herring
2018-03-17  9:28 ` [PATCH net-next 05/12] dt-bindings: net: dwmac-sun8i: Add binding for GMAC on Allwinner R40 SoC Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 06/12] net: stmmac: dwmac-sun8i: Use regmap_field for syscon register access Chen-Yu Tsai
2018-03-22  7:42   ` kbuild test robot
2018-03-22  7:42   ` [RFC PATCH] net: stmmac: dwmac-sun8i: sun8i_syscon_reg_field can be static kbuild test robot
2018-03-22 19:07     ` David Miller
2018-03-17  9:28 ` [PATCH net-next 07/12] net: stmmac: dwmac-sun8i: Allow getting syscon regmap from CCU device Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 08/12] net: stmmac: dwmac-sun8i: Support different ranges for TX/RX delay chains Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 09/12] net: stmmac: dwmac-sun8i: Add support for GMAC on Allwinner R40 SoC Chen-Yu Tsai
2018-03-22  8:41   ` [RFC PATCH] net: stmmac: dwmac-sun8i: sun8i_ccu_reg_field can be static kbuild test robot
2018-03-22  8:41   ` [PATCH net-next 09/12] net: stmmac: dwmac-sun8i: Add support for GMAC on Allwinner R40 SoC kbuild test robot
2018-03-17  9:28 ` [PATCH net-next 10/12] ARM: dts: sun8i: r40: bananapi-m2-ultra: Sort device node dereferences Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 11/12] ARM: dts: sun8i: r40: Add device node and RGMII pinmux node for GMAC Chen-Yu Tsai
2018-03-17  9:28 ` [PATCH net-next 12/12] ARM: dts: sun8i: r40: bananapi-m2-ultra: Enable GMAC ethernet controller Chen-Yu Tsai

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