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[144.49.247.119]) by smtp-relay.gmail.com with ESMTPS id d9443c01a7336-29034e02b83sm2995065ad.10.2025.10.09.14.20.27 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 09 Oct 2025 14:20:27 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-854bec86266so703312085a.1 for ; Thu, 09 Oct 2025 14:20:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1760044827; x=1760649627; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=PQrmK4OLtZ+IgNtZ8671Owl8Y5KLotbw1U+tAsx0fP8=; b=C7IQ1hr16fabfBwl+LqkiTFxvCwn5fwb7V9rpS6CR7cw7+6fmS/9xO4IaxiuldEPS1 x2GpL/+adxI5X11U8/4TJqj3Kt24OVJd5IfSiVaaTful2UP+fPjTcK544B9JtNFkFSP3 DQwgwwe1pez5eCDm9uE6I8jKhw8+SwgoX8BbE= X-Forwarded-Encrypted: i=1; AJvYcCWsY9jZyUNdEcNfVutSUF1s0mcH/63/zND1FbbPR2YzuUYmOhBl+SO9yPuLCNx86ZD14hkHqj37ZRSQwd8=@vger.kernel.org X-Received: by 2002:a05:620a:4492:b0:865:cacf:e133 with SMTP id af79cd13be357-8835104c86bmr1139487085a.36.1760044826823; Thu, 09 Oct 2025 14:20:26 -0700 (PDT) X-Received: by 2002:a05:620a:4492:b0:865:cacf:e133 with SMTP id af79cd13be357-8835104c86bmr1139483785a.36.1760044826325; Thu, 09 Oct 2025 14:20:26 -0700 (PDT) Received: from mail.broadcom.net ([192.19.144.250]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8849f9ae428sm274832685a.16.2025.10.09.14.20.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Oct 2025 14:20:25 -0700 (PDT) From: Kamal Dasu To: peng.fan@oss.nxp.com, andersson@kernel.org, baolin.wang@linux.alibaba.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, florian.fainelli@broadcom.com Cc: bcm-kernel-feedback-list@broadcom.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kamal Dasu Subject: [PATCH v3 0/3] Adding brcmstb-hwspinlock support Date: Thu, 9 Oct 2025 17:20:00 -0400 Message-Id: <20251009212003.2714447-1-kamal.dasu@broadcom.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e This is a standalone patch for the hardware semaphore feature for all brcmstb SoCs that have the same hardware semaphore registers hence platform driver compatible uses: '.compatible = "brcm,brcmstb-hwspinlock"' The patch has been tested to work as builtin as well as a module. v3 changes: Added detailed explantion in the all commit messages as per review comments - Added description of 'sundry' ip block that the hardware semaphore belongs to - Added reasoning for using '.compatible = "brcm,brcmstb-hwspinlock" v2 changes: Adressed following review comments: - fixed ordering of obj brcmstb_hwspinlock.o in Makefile - fixed ordering of 'config HWSPINLOCK_BRCMSTB' block in Kconfig - Renamed BRCMSTB_MAX_SEMAPHORES to BRCMSTB_NUM_SEMAPHORES - Removed unnecessary platfrom_set_drvdata(pdev, bank); Also addressing duplicate PATCH 1/3 sent in error as part of v1 change. v1 changes: based on fixes made to Initial patch : url: https://github.com/intel-lab-lkp/linux/commits/Kamal-Dasu/dt-bindings-brcmstb-hwspinlock-support-for-hwspinlock/20250712-034624 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250711154221.928164-4-kamal.dasu%40broadcom.com patch subject: [PATCH 2/4] hwspinlock: brcmstb hardware semaphore support All the review comments and build warning have been fixed. Kamal Dasu (3): dt-bindings: hwlock: Adding brcmstb-hwspinlock support hwspinlock: brcmstb hardware semaphore support MAINTAINERS: adding entry for BRCMSTB HWSPINLOCK driver .../hwlock/brcm,brcmstb-hwspinlock.yaml | 36 +++++++ MAINTAINERS | 8 ++ drivers/hwspinlock/Kconfig | 11 ++- drivers/hwspinlock/Makefile | 1 + drivers/hwspinlock/brcmstb_hwspinlock.c | 96 +++++++++++++++++++ 5 files changed, 151 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/hwlock/brcm,brcmstb-hwspinlock.yaml create mode 100644 drivers/hwspinlock/brcmstb_hwspinlock.c -- 2.34.1