From patchwork Sun Mar 3 19:04:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dragan Simic X-Patchwork-Id: 13579875 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EF0A3C54E49 for ; Sun, 3 Mar 2024 19:05:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Y4THFDcISHXx95AgZU6d0oECL/A+UUTn1JoIF9h28GQ=; b=gB0rDi2RfgyXUL BVY7AlYDfc0SGC4gc9TahUlcjKbmtKLuDzm9GkLZyZ+uyqJm/coSYam4BBUp46SExwuCF/IMJflXH QZze31vpu9Wnj2I7gtKyuqjDOxXg3JPc7um5saKyW+lPG9/3vvQEKQDuqKS8fp5PQEx4Br4qC8i0D s2sJTlpC3qvUWQQc3942mJVegnPklSP/iWO6scSbFW/W6eIVsqHpC/V2Xr6dLEDbl3XwIBP7UoW3X DtU3aCBo8c2Hxwrt1Bgvpu1eBoXLb4oROLFknGIk1WBlXMx/m0gccWeOa9YuoPjxsTjooc4fb9pEv AR6C4mNw9qok3arGcuWQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rgr8q-00000006WUD-07wf; Sun, 03 Mar 2024 19:04:56 +0000 Received: from mail.manjaro.org ([2a01:4f8:c0c:51f3::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rgr8m-00000006WQx-189K; Sun, 03 Mar 2024 19:04:54 +0000 From: Dragan Simic DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=manjaro.org; s=2021; t=1709492679; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=PhdEsgsaQJt/ydW9Y2LBPPTw2gGhmjRcC5/1KGmz7K4=; b=ge9Be1XYE5k0igwgLfxN/tTtlKhKW/QbvmJWyFTbGrIvenz3kfBnfp8xcf8e2jygsf2j/E cNgYRGH1aswwwEAPIPrkBr+29ZnJ3w2YE9MafsmFYfl2y5vWsFf1R/ADBpxalEYSj7XTgr 2JbHt9GHguQHzDRZWWTJThXkr79EUZxl2BfAKjCTYLjJ1Rf6IRoy6e5iP6tynPMicsZ+Jj 04YwwBVmKJEKorKJyjk+RX/JblntjtqV3kvM+6G2EFZ4nfMnNA5mhE4aH8ULpLd4PITNK3 xD/HsgrJYtWMT9a8/njVU0d/ZQ1JMsevw5schtSBC+oNCP/F5lPl/Kx2yWt/qA== To: linux-rockchip@lists.infradead.org Cc: heiko@sntech.de, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org Subject: [PATCH] arm64: dts: rockchip: Add cache information to the SoC dtsi for RK3328 Date: Sun, 3 Mar 2024 20:04:27 +0100 Message-Id: MIME-Version: 1.0 Authentication-Results: ORIGINATING; auth=pass smtp.auth=dsimic@manjaro.org smtp.mailfrom=dsimic@manjaro.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240303_110452_949548_CFCA6A9F X-CRM114-Status: GOOD ( 11.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add missing cache information to the Rockchip RK3328 SoC dtsi, to allow the userspace, which includes /proc/cpuinfo and lscpu(1), to present proper RK3328 cache information. While there, use a more self-descriptive label for the L2 cache node, which also makes it more consistent with other SoC dtsi files. The cache parameters for the RK3328 dtsi were obtained and partially derived by hand from the cache size and layout specifications found in the following datasheets, official vendor websites, and technical reference manuals: - Rockchip RK3328 datasheet, version 1.4 - https://opensource.rock-chips.com/wiki_RK3328, accessed on 2024-02-28 - ARM Cortex-A53 revision r0p3 TRM, version E For future reference, here's a brief summary of the documentation: - All caches employ the 64-byte cache line length - Each Cortex-A53 core has 32 KB of L1 2-way, set-associative instruction cache and 32 KB of L1 4-way, set-associative data cache - The entire SoC has 256 KB of unified L2 16-way, set-associative cache The RK3328 SoC dtsi is also used for the single RK3318-based supported board. Unfortunately, no datasheet is available for the RK3318, but some unofficial sources state that its L2 cache size is the same as RK3328's, so it's perhaps safe to assume the same for the L1 instruction and data cache sizes. Signed-off-by: Dragan Simic Reviewed-by: Anand Moon --- arch/arm64/boot/dts/rockchip/rk3328.dtsi | 37 ++++++++++++++++++++---- 1 file changed, 32 insertions(+), 5 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi index 7b4c15c4a9c3..ac2846c33dc9 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -46,47 +46,71 @@ cpu0: cpu@0 { cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; - next-level-cache = <&l2>; operating-points-v2 = <&cpu0_opp_table>; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; + next-level-cache = <&l2_cache>; }; cpu1: cpu@1 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <0x0 0x1>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; - next-level-cache = <&l2>; operating-points-v2 = <&cpu0_opp_table>; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; + next-level-cache = <&l2_cache>; }; cpu2: cpu@2 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <0x0 0x2>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; - next-level-cache = <&l2>; operating-points-v2 = <&cpu0_opp_table>; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; + next-level-cache = <&l2_cache>; }; cpu3: cpu@3 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <0x0 0x3>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; - next-level-cache = <&l2>; operating-points-v2 = <&cpu0_opp_table>; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; + next-level-cache = <&l2_cache>; }; idle-states { @@ -102,10 +126,13 @@ CPU_SLEEP: cpu-sleep { }; }; - l2: l2-cache0 { + l2_cache: l2-cache { compatible = "cache"; cache-level = <2>; cache-unified; + cache-size = <0x40000>; + cache-line-size = <64>; + cache-sets = <256>; }; };