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dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=renesas.com; Received: from TYYPR01MB15118.jpnprd01.prod.outlook.com (2603:1096:405:1a1::11) by OS7PR01MB18397.jpnprd01.prod.outlook.com (2603:1096:604:4be::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.14; Fri, 23 Oct 2026 15:09:11 +0000 Received: from TYYPR01MB15118.jpnprd01.prod.outlook.com ([fe80::1116:d56:8164:63b4]) by TYYPR01MB15118.jpnprd01.prod.outlook.com ([fe80::1116:d56:8164:63b4%6]) with mapi id 15.21.0546.017; Fri, 23 Oct 2026 15:09:10 +0000 Message-ID: <1ab43b52-0ee0-4e9f-871c-708736023b4b@renesas.com> Date: Fri, 23 Oct 2026 16:08:58 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/8] i3c: renesas: Add RZ/G3L support To: Krzysztof Kozlowski Cc: Wolfram Sang , Tommaso Merciai , Alexandre Belloni , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Stephen Boyd , Brian Masney , Jerome Brunet , Linus Walleij , linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org References: <20261020-divo-ssgrlpcsrc-2966-i3c-v1-0-30a47f25e515@renesas.com> <20261020-divo-ssgrlpcsrc-2966-i3c-v1-4-30a47f25e515@renesas.com> <20261023-thundering-axolotl-of-examination-aaa6ba@quoll> Content-Language: en-US From: Diogo Ivo In-Reply-To: <20261023-thundering-axolotl-of-examination-aaa6ba@quoll> Content-Type: text/plain; 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However, for >> instance the RZ/G3L variant has no HDR Exit Pattern detection interrupt: >> RZ/G3S exposes 17 interrupts, while RZ/G3L exposes 16. A RZ/G3L node >> therefore cannot be described with the RZ/G3S compatible, as its bindings >> require at least 17 interrupts. The same point applies to RZ/G3E, that >> requires 3 clocks while the RZ/G3L requires 2. >> >> >From the driver point of view there is no difference between the two >> SoCs: the driver only consumes the tclk clock, the presetn and tresetn >> resets and seven named interrupts (resp, rx, tx, st, sp, tend, nack), >> all of which are among the 16 shared ones. No driver changes are needed >> besides the new compatible. >> >> Signed-off-by: Diogo Ivo >> --- >> drivers/i3c/master/renesas-i3c.c | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c >> index 4fddc1b4fdbb..80a6df1151bf 100644 >> --- a/drivers/i3c/master/renesas-i3c.c >> +++ b/drivers/i3c/master/renesas-i3c.c >> @@ -1625,6 +1625,7 @@ static const struct dev_pm_ops renesas_i3c_pm_ops = { >> >> static const struct of_device_id renesas_i3c_of_ids[] = { >> { .compatible = "renesas,r9a08g045-i3c" }, >> + { .compatible = "renesas,r9a08g046-i3c" }, > > So fully compatible? If so, drop this and express compatibility in the > bindings. Ok, I will drop this patch and use the fallback to the G3S instead, as per Biju's comment on the HW differences between G3{L, S} and G3E. Thanks for the review, Diogo > Best regards, > Krzysztof