linux-kernel - Re: [PATCH] arm64: dts: ti: k3-j7200: Fix register map for main domain pmx

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Message-ID: <a39ebd71-0aef-4925-ab94-23dc2ee785fd@ti.com>
Date: Thu, 29 Aug 2024 14:32:41 -0500
From: Jared McArthur <j-mcarthur@...com>
To: Aniket Limaye <a-limaye@...com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <mranostay@...com>, <conor+dt@...nel.org>, <krzk+dt@...nel.org>,
        <robh@...nel.org>, <kristo@...nel.org>, <vigneshr@...com>, <nm@...com>
CC: <u-kumar1@...com>
Subject: Re: [PATCH] arm64: dts: ti: k3-j7200: Fix register map for main
 domain pmx

On 8/29/24 02:12, Aniket Limaye wrote:
> From: Jared McArthur <j-mcarthur@...com>
>
> Commit 0d0a0b441346 ("arm64: dts: ti: k3-j7200: fix main pinmux
> range") split the main_pmx0 into two nodes: main_pmx0 and main_pmx1
> due to a non-addressable region, but incorrectly represented the
> ranges. As a result, the memory map for the pinctrl is incorrect. Fix
> this by introducing the correct ranges.
>
> The ranges are taken from the J7200 TRM (Table 5-695. CTRL_MMR0
> Registers). Padconfig registers stretch from 0x11c000 to 0x11c168
> with non-addressable portions from 0x11c10c to 0x11c10f, 0x11x114 to
> 0x11c11b, and 0x11c128 to 0x11c163.

Still unsure whether these registers are correct. There is a
conflict between the TRM [1] and the datasheet [2] on whether
PADCONFIG63 exists. The datasheet doesn't think it does. I would like
to confirm this before the patch is submitted/accepted, because the
pinmuxing would need to change again if the datasheet is correct.

[1] https://www.ti.com/lit/pdf/spruiu1
[2] https://www.ti.com/lit/gpn/dra821u

> Link: https://www.ti.com/lit/ug/spruiu1c/spruiu1c.pdf (TRM)
> Fixes: 0d0a0b441346 ("arm64: dts: ti: k3-j7200: fix main pinmux range")
> Signed-off-by: Jared McArthur <j-mcarthur@...com>
> Signed-off-by: Aniket Limaye <a-limaye@...com>

[...]

-- 
Best,
Jared McArthur