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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Conor Dooley <conor@kernel.org>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Claudiu Beznea <claudiu.beznea@tuxon.dev>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Lars Povlsen <lars.povlsen@microchip.com>,
	Steen Hegelund <Steen.Hegelund@microchip.com>,
	Daniel Machon <daniel.machon@microchip.com>,
	UNGLinuxDriver@microchip.com,
	Bjarni Jonasson <bjarni.jonasson@microchip.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: horatiu.vultur@microchip.com, steen.hegelund@microchip.com,
	Krzysztof Kozlowski <krzk@kernel.org>
Subject: [RFT PATCH v2 09/10] arm64: dts: microchip: sparx5_pcb134: drop duplicated NOR flash
Date: Fri,  5 Apr 2024 21:04:18 +0200	[thread overview]
Message-ID: <20240405190419.74162-9-krzk@kernel.org> (raw)
In-Reply-To: <20240405190419.74162-1-krzk@kernel.org>

Since beginning the DTS extended the SPI0 in two places adding two SPI
muxes, each with same SPI NOR flash.  Both used exactly the same
chip-selects, so this was clearly buggy code.  Then in commit
d0f482bb06f9 ("arm64: dts: sparx5: Add the Sparx5 switch node") one SPI
mux was removed, while keeping the SPI NOR flash node.

This still leaves duplicated SPI nodes under same chip select 0,
reported by dtc W=1 warnings:

  sparx5_pcb134_board.dtsi:277.10-281.4: Warning (unique_unit_address_if_enabled): /axi@600000000/spi@600104000/flash@0: duplicate unit-address (also used in node /axi@600000000/spi@600104000/spi@0)

Steen Hegelund confirmed that in fact there is a SPI mux, thus remove
the duplicated node without the mux.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Not tested on hardware

Changes in v2:
1. Remove SPI node without mux.
---
 arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
index f165a409bc1d..2c5574734c9e 100644
--- a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
+++ b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
@@ -272,15 +272,6 @@ gpio@1 {
 	};
 };
 
-&spi0 {
-	status = "okay";
-	flash@0 {
-		compatible = "jedec,spi-nor";
-		spi-max-frequency = <8000000>;
-		reg = <0>;
-	};
-};
-
 &spi0 {
 	status = "okay";
 	spi@0 {
-- 
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzk@kernel.org>
To: Conor Dooley <conor@kernel.org>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Claudiu Beznea <claudiu.beznea@tuxon.dev>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Lars Povlsen <lars.povlsen@microchip.com>,
	Steen Hegelund <Steen.Hegelund@microchip.com>,
	Daniel Machon <daniel.machon@microchip.com>,
	UNGLinuxDriver@microchip.com,
	Bjarni Jonasson <bjarni.jonasson@microchip.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: horatiu.vultur@microchip.com, steen.hegelund@microchip.com,
	Krzysztof Kozlowski <krzk@kernel.org>
Subject: [RFT PATCH v2 09/10] arm64: dts: microchip: sparx5_pcb134: drop duplicated NOR flash
Date: Fri,  5 Apr 2024 21:04:18 +0200	[thread overview]
Message-ID: <20240405190419.74162-9-krzk@kernel.org> (raw)
In-Reply-To: <20240405190419.74162-1-krzk@kernel.org>

Since beginning the DTS extended the SPI0 in two places adding two SPI
muxes, each with same SPI NOR flash.  Both used exactly the same
chip-selects, so this was clearly buggy code.  Then in commit
d0f482bb06f9 ("arm64: dts: sparx5: Add the Sparx5 switch node") one SPI
mux was removed, while keeping the SPI NOR flash node.

This still leaves duplicated SPI nodes under same chip select 0,
reported by dtc W=1 warnings:

  sparx5_pcb134_board.dtsi:277.10-281.4: Warning (unique_unit_address_if_enabled): /axi@600000000/spi@600104000/flash@0: duplicate unit-address (also used in node /axi@600000000/spi@600104000/spi@0)

Steen Hegelund confirmed that in fact there is a SPI mux, thus remove
the duplicated node without the mux.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Not tested on hardware

Changes in v2:
1. Remove SPI node without mux.
---
 arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
index f165a409bc1d..2c5574734c9e 100644
--- a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
+++ b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi
@@ -272,15 +272,6 @@ gpio@1 {
 	};
 };
 
-&spi0 {
-	status = "okay";
-	flash@0 {
-		compatible = "jedec,spi-nor";
-		spi-max-frequency = <8000000>;
-		reg = <0>;
-	};
-};
-
 &spi0 {
 	status = "okay";
 	spi@0 {
-- 
2.34.1


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  parent reply	other threads:[~2024-04-05 19:05 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-05 19:04 [PATCH v2 01/10] arm64: dts: microchip: sparx5: fix mdio reg Krzysztof Kozlowski
2024-04-05 19:04 ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 02/10] arm64: dts: microchip: sparx5: correct serdes unit address Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 03/10] arm64: dts: microchip: sparx5_pcb134: add missing I2C mux unit addresses Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 04/10] arm64: dts: microchip: sparx5_pcb135: " Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 05/10] arm64: dts: microchip: sparx5_pcb134: align I2C mux node name with bindings Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-11 18:27   ` Rob Herring
2024-04-11 18:27     ` Rob Herring
2024-04-11 19:06     ` Krzysztof Kozlowski
2024-04-11 19:06       ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 06/10] arm64: dts: microchip: sparx5_pcb135: " Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 07/10] arm64: dts: microchip: sparx5_pcb134: drop LED unit addresses Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` [PATCH v2 08/10] arm64: dts: microchip: sparx5_pcb135: " Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-05 19:04 ` Krzysztof Kozlowski [this message]
2024-04-05 19:04   ` [RFT PATCH v2 09/10] arm64: dts: microchip: sparx5_pcb134: drop duplicated NOR flash Krzysztof Kozlowski
2024-04-08  8:44   ` Steen Hegelund
2024-04-08  8:44     ` Steen Hegelund
2024-04-05 19:04 ` [RFT PATCH v2 10/10] arm64: dts: microchip: sparx5_pcb135: " Krzysztof Kozlowski
2024-04-05 19:04   ` Krzysztof Kozlowski
2024-04-08  8:45   ` Steen Hegelund
2024-04-08  8:45     ` Steen Hegelund
2024-04-08 16:00 ` [PATCH v2 01/10] arm64: dts: microchip: sparx5: fix mdio reg Conor Dooley
2024-04-08 16:00   ` Conor Dooley

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