Thread (22 messages) flat view 22 messages, 5 authors, 2022-12-09

Re: [PATCH v1] Revert "ARM: dts: imx7: Fix NAND controller size-cells"

From: Miquel Raynal <miquel.raynal@bootlin.com>
Date: 2022-12-05 18:00:27
Also in: linux-devicetree, stable

Hi Marek,

marex@denx.de wrote on Mon, 5 Dec 2022 17:26:53 +0100:
On 12/5/22 16:23, Francesco Dolcini wrote:
quoted
From: Francesco Dolcini <redacted>

This reverts commit 753395ea1e45c724150070b5785900b6a44bd5fb.

It introduced a boot regression on colibri-imx7, and potentially any
other i.MX7 boards with MTD partition list generated into the fdt by
U-Boot.

While the commit we are reverting here is not obviously wrong, it fixes
only a dt binding checker warning that is non-functional, while it
introduces a boot regression and there is no obvious fix ready.

Cc: stable@vger.kernel.org
Fixes: 753395ea1e45 ("ARM: dts: imx7: Fix NAND controller size-cells")
Link: https://lore.kernel.org/all/Y4dgBTGNWpM6SQXI@francesco-nb.int.toradex.com/ (local)
Link: https://lore.kernel.org/all/20221205144917.6514168a@xps-13/ (local)
Signed-off-by: Francesco Dolcini <redacted>
---
  arch/arm/boot/dts/imx7s.dtsi | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 03d2e8544a4e..0fc9e6b8b05d 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -1270,10 +1270,10 @@ dma_apbh: dma-apbh@33000000 {
  			clocks = <&clks IMX7D_NAND_USDHC_BUS_RAWNAND_CLK>;
  		};  
  > -		gpmi: nand-controller@33002000 {  
+		gpmi: nand-controller@33002000{
  			compatible = "fsl,imx7d-gpmi-nand";
  			#address-cells = <1>;
-			#size-cells = <0>;
+			#size-cells = <1>;
  			reg = <0x33002000 0x2000>, <0x33004000 0x4000>;
  			reg-names = "gpmi-nand", "bch";
  			interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;  
I suspect this fix should eventually be reverted again, once a proper fix is agreed upon in the MTD OF parser, right ?
I guess it's time to migrate to a more modern definition, it's not
complex to do, there are plenty of examples. This would be IMHO a
better step ahead rather than just a cell change. Anyway, I don't mind
reverting this once we've sorted this mess out and fixed U-Boot.

Cheers,
Miquèl

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