From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB254313523; Wed, 3 Dec 2025 16:05:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764777946; cv=none; b=XW2jGtbK55aLH+RZc/CrpPUU3dgOKH1Vw1b7Vw3MMmPm184gwbFyKmv/pDki81r1iBQFZQW0I+5SpA1/NEKR7pimhtxEL/66OqnQtgSs18JrJURcX8fmBhw03P9TG+9l/eQUkLoZW61c8xeH/TDtiK66n+LKf3940uRBTTGsHww= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764777946; c=relaxed/simple; bh=lCxFO2de/A9M4+iuOkl6krfbtltxn1QYy/63755dIjs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nOsuK8wUaYUPILZKVvlq3iyorxhLJZejA485JMiMeajXydx7mycZlYw3pE8bGosbqvvrYQd8bXkUg30+7hGtaQMCdHvyPoRtvPtujWAhDq9Plpo24+WcozvSdDWf9GonHInSwhAnr1B/7Z/n6My/HqmNiAw1Y5ful7JQ+W/WDrQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bFohm1OC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bFohm1OC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 58BF4C116C6; Wed, 3 Dec 2025 16:05:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764777945; bh=lCxFO2de/A9M4+iuOkl6krfbtltxn1QYy/63755dIjs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bFohm1OCulVYFJy2G0L/w3jWcsXMmJ6fiobVr9pDsh+jU5xDWirpT2VSts6jDsNS/ AVWpaCBYHmpGNBzuEu/4CaJQVMuG1ij393bTpeneGo7NBjkA0RaStkcf5GabCQfexg zGdc5FYoSb21ZTvCuhXxwqk8F25FPLcY8b++mHKI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicolas Ferre , Cristian Birsan , Alexandre Belloni , Claudiu Beznea , Sasha Levin Subject: [PATCH 5.15 195/392] ARM: at91: pm: save and restore ACR during PLL disable/enable Date: Wed, 3 Dec 2025 16:25:45 +0100 Message-ID: <20251203152421.249494048@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251203152414.082328008@linuxfoundation.org> References: <20251203152414.082328008@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolas Ferre [ Upstream commit 0c01fe49651d387776abed6a28541e80c8a93319 ] Add a new word in assembly to store ACR value during the calls to at91_plla_disable/at91_plla_enable macros and use it. Signed-off-by: Nicolas Ferre [cristian.birsan@microchip.com: remove ACR_DEFAULT_PLLA loading] Signed-off-by: Cristian Birsan Link: https://lore.kernel.org/r/20250827145427.46819-4-nicolas.ferre@microchip.com Reviewed-by: Alexandre Belloni Signed-off-by: Claudiu Beznea Signed-off-by: Sasha Levin --- arch/arm/mach-at91/pm_suspend.S | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S index 60f9d6f5f8229..1b8d1fbb41ef4 100644 --- a/arch/arm/mach-at91/pm_suspend.S +++ b/arch/arm/mach-at91/pm_suspend.S @@ -685,6 +685,10 @@ sr_dis_exit: bic tmp2, tmp2, #AT91_PMC_PLL_UPDT_ID str tmp2, [pmc, #AT91_PMC_PLL_UPDT] + /* save acr */ + ldr tmp2, [pmc, #AT91_PMC_PLL_ACR] + str tmp2, .saved_acr + /* save div. */ mov tmp1, #0 ldr tmp2, [pmc, #AT91_PMC_PLL_CTRL0] @@ -754,7 +758,7 @@ sr_dis_exit: str tmp1, [pmc, #AT91_PMC_PLL_UPDT] /* step 2. */ - ldr tmp1, =AT91_PMC_PLL_ACR_DEFAULT_PLLA + ldr tmp1, .saved_acr str tmp1, [pmc, #AT91_PMC_PLL_ACR] /* step 3. */ @@ -1130,6 +1134,8 @@ ENDPROC(at91_pm_suspend_in_sram) .word 0 .saved_mckr: .word 0 +.saved_acr: + .word 0 .saved_pllar: .word 0 .saved_sam9_lpr: -- 2.51.0