From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26094C43219 for ; Tue, 15 Feb 2022 15:36:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240939AbiBOPf4 (ORCPT ); Tue, 15 Feb 2022 10:35:56 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:46154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240619AbiBOPfC (ORCPT ); Tue, 15 Feb 2022 10:35:02 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B27F9C086A; Tue, 15 Feb 2022 07:30:47 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5FAF7B81AF1; Tue, 15 Feb 2022 15:30:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BCD90C340F1; Tue, 15 Feb 2022 15:30:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644939045; bh=D+Ib7wkm+pUgHIFpFkgZMNVJA3CmXTMDtP5x7u0Q6fc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=owPH6hmPWgvIdleQTPHeC+UH3qazJQhmAMW0/iHVsMrNXy6srvK6bNgPucWwa8P/h 7SPgL3FJvp+riQ28IRFTOuC/jW5ikNphqQ3wM3Zluh3ocx4iD7uRJ3lejB5Etk9qTZ 9t4lJ2NagG2ivfdy6ElShWKv3khXkeccOmqBfwQ3JkwpH6pEuooRKrHkpv8QElJQjo JXABGCdDPwIijvOOGNNu6S/SZAlA/euuNZr32qmazsMoCAxuFXgMVBlVfqw8KxnEFt zP1LAKG826EQJV8V3Uf9eYQ9jGpmR9g3OFkIHQYkOglLhNDOPKz001AG/Y6YuCUASn x4r+s1H0r/NMg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Guo Ren , Anup Patel , Marc Zyngier , Palmer Dabbelt , Samuel Holland , Thomas Gleixner , Sasha Levin , paul.walmsley@sifive.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org Subject: [PATCH AUTOSEL 5.4 04/17] irqchip/sifive-plic: Add missing thead,c900-plic match string Date: Tue, 15 Feb 2022 10:30:24 -0500 Message-Id: <20220215153037.581579-4-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220215153037.581579-1-sashal@kernel.org> References: <20220215153037.581579-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren [ Upstream commit 1d4df649cbb4b26d19bea38ecff4b65b10a1bbca ] The thead,c900-plic has been used in opensbi to distinguish PLIC [1]. Although PLICs have the same behaviors in Linux, they are different hardware with some custom initializing in firmware(opensbi). Qute opensbi patch commit-msg by Samuel: The T-HEAD PLIC implementation requires setting a delegation bit to allow access from S-mode. Now that the T-HEAD PLIC has its own compatible string, set this bit automatically from the PLIC driver, instead of reaching into the PLIC's MMIO space from another driver. [1]: https://github.com/riscv-software-src/opensbi/commit/78c2b19218bd62653b9fb31623a42ced45f38ea6 Signed-off-by: Guo Ren Cc: Anup Patel Cc: Marc Zyngier Cc: Palmer Dabbelt Cc: Samuel Holland Cc: Thomas Gleixner Tested-by: Samuel Holland Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220130135634.1213301-3-guoren@kernel.org Signed-off-by: Sasha Levin --- drivers/irqchip/irq-sifive-plic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index 7cd7b140dfe97..9dad45d928bfe 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -313,3 +313,4 @@ static int __init plic_init(struct device_node *node, IRQCHIP_DECLARE(sifive_plic, "sifive,plic-1.0.0", plic_init); IRQCHIP_DECLARE(riscv_plic0, "riscv,plic0", plic_init); /* for legacy systems */ +IRQCHIP_DECLARE(thead_c900_plic, "thead,c900-plic", plic_init); /* for firmware driver */ -- 2.34.1