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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Robin Gong <yibin.gong@nxp.com>
Cc: vkoul@kernel.org, mark.rutland@arm.com, broonie@kernel.org,
	robh+dt@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com,
	shawnguo@kernel.org, festevam@gmail.com, s.hauer@pengutronix.de,
	martin.fuzzey@flowbird.group, u.kleine-koenig@pengutronix.de,
	dan.j.williams@intel.com, matthias.schiffer@ew.tq-group.com,
	frieder.schrempf@kontron.de, m.felsch@pengutronix.de,
	l.stach@pengutronix.de, xiaoning.wang@nxp.com,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-spi@vger.kernel.org, linux-imx@nxp.com,
	kernel@pengutronix.de, dmaengine@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v15 11/12] dmaengine: imx-sdma: add uart rom script
Date: Fri, 1 Apr 2022 17:51:47 +0100	[thread overview]
Message-ID: <Ykcto7pM3xSGRIse@shell.armlinux.org.uk> (raw)
In-Reply-To: <1626201709-19643-12-git-send-email-yibin.gong@nxp.com>

On Wed, Jul 14, 2021 at 02:41:48AM +0800, Robin Gong wrote:
> For the compatibility of NXP internal legacy kernel before 4.19 which
> is based on uart ram script and upstreaming kernel based on uart rom
> script, add both uart ram/rom script in latest sdma firmware. By default
> uart rom script used.
> Besides, add two multi-fifo scripts for SAI/PDM on i.mx8m/8mm and add
> back qspi script miss for v4(i.mx7d/8m/8mm family, but v3 is for i.mx6).
> 
> rom script:
>         uart_2_mcu_addr
> 	uartsh_2_mcu_addr /* through spba bus */
> am script:
> 	uart_2_mcu_ram_addr
> 	uartsh_2_mcu_ram_addr /* through spba bus */
> 
> Please get latest sdma firmware from the below and put them into the path
> (/lib/firmware/imx/sdma/):
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
> /tree/imx/sdma

Thanks for breaking my platforms when upgrading from 5.13 to 5.16, that
was a really nice experience.

This is _not_ what we do with the Linux kernel. We do not require random
bits of userspace to be upgraded/downgraded in lock-step with the
kernel. There is absolutely no reason for this to happen in this case.

The SDMA firmware is already versioned. You know what version is
present. Randomly renaming stuff in a structure that represents the
contents of firmware like this is just not on.

I know it's taken 9 months to find this, but PLEASE do not ever do this
again, and never think this kind of thing is acceptable. It isn't.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Robin Gong <yibin.gong@nxp.com>
Cc: vkoul@kernel.org, mark.rutland@arm.com, broonie@kernel.org,
	robh+dt@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com,
	shawnguo@kernel.org, festevam@gmail.com, s.hauer@pengutronix.de,
	martin.fuzzey@flowbird.group, u.kleine-koenig@pengutronix.de,
	dan.j.williams@intel.com, matthias.schiffer@ew.tq-group.com,
	frieder.schrempf@kontron.de, m.felsch@pengutronix.de,
	l.stach@pengutronix.de, xiaoning.wang@nxp.com,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-spi@vger.kernel.org, linux-imx@nxp.com,
	kernel@pengutronix.de, dmaengine@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v15 11/12] dmaengine: imx-sdma: add uart rom script
Date: Fri, 1 Apr 2022 17:51:47 +0100	[thread overview]
Message-ID: <Ykcto7pM3xSGRIse@shell.armlinux.org.uk> (raw)
In-Reply-To: <1626201709-19643-12-git-send-email-yibin.gong@nxp.com>

On Wed, Jul 14, 2021 at 02:41:48AM +0800, Robin Gong wrote:
> For the compatibility of NXP internal legacy kernel before 4.19 which
> is based on uart ram script and upstreaming kernel based on uart rom
> script, add both uart ram/rom script in latest sdma firmware. By default
> uart rom script used.
> Besides, add two multi-fifo scripts for SAI/PDM on i.mx8m/8mm and add
> back qspi script miss for v4(i.mx7d/8m/8mm family, but v3 is for i.mx6).
> 
> rom script:
>         uart_2_mcu_addr
> 	uartsh_2_mcu_addr /* through spba bus */
> am script:
> 	uart_2_mcu_ram_addr
> 	uartsh_2_mcu_ram_addr /* through spba bus */
> 
> Please get latest sdma firmware from the below and put them into the path
> (/lib/firmware/imx/sdma/):
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
> /tree/imx/sdma

Thanks for breaking my platforms when upgrading from 5.13 to 5.16, that
was a really nice experience.

This is _not_ what we do with the Linux kernel. We do not require random
bits of userspace to be upgraded/downgraded in lock-step with the
kernel. There is absolutely no reason for this to happen in this case.

The SDMA firmware is already versioned. You know what version is
present. Randomly renaming stuff in a structure that represents the
contents of firmware like this is just not on.

I know it's taken 9 months to find this, but PLEASE do not ever do this
again, and never think this kind of thing is acceptable. It isn't.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

  reply	other threads:[~2022-04-01 16:53 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13 18:41 [PATCH v15 00/12] add ecspi ERR009165 for i.mx6/7 soc family Robin Gong
2021-07-13 18:41 ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 01/12] Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core" Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 02/12] Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores" Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 03/12] Revert "dmaengine: imx-sdma: refine to load context only once" Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 04/12] dmaengine: imx-sdma: remove duplicated sdma_load_context Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 05/12] dmaengine: dma: imx-sdma: add fw_loaded and is_ram_script Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 10:34   ` Lucas Stach
2021-07-13 10:34     ` Lucas Stach
2021-07-13 18:41 ` [PATCH v15 06/12] dmaengine: imx-sdma: add mcu_2_ecspi script Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 07/12] spi: imx: fix ERR009165 Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 08/12] spi: imx: remove ERR009165 workaround on i.mx6ul Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 10:34   ` Lucas Stach
2021-07-13 10:34     ` Lucas Stach
2021-07-13 18:41 ` [PATCH v15 09/12] dmaengine: imx-sdma: remove ERR009165 " Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 10:36   ` Lucas Stach
2021-07-13 10:36     ` Lucas Stach
2021-07-13 18:41 ` [PATCH v15 10/12] dma: imx-sdma: add i.mx6ul compatible name Robin Gong
2021-07-13 18:41   ` Robin Gong
2021-07-13 18:41 ` [PATCH v15 11/12] dmaengine: imx-sdma: add uart rom script Robin Gong
2021-07-13 18:41   ` Robin Gong
2022-04-01 16:51   ` Russell King (Oracle) [this message]
2022-04-01 16:51     ` Russell King (Oracle)
2021-07-13 18:41 ` [PATCH v15 12/12] dmaengine: imx-sdma: add terminated list for freed descriptor in worker Robin Gong
2021-07-13 18:41   ` Robin Gong

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