From patchwork Thu Apr 15 10:50:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 422878 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CDD3FC433B4 for ; Thu, 15 Apr 2021 10:52:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B315161249 for ; Thu, 15 Apr 2021 10:52:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232758AbhDOKw3 (ORCPT ); Thu, 15 Apr 2021 06:52:29 -0400 Received: from esa.microchip.iphmx.com ([68.232.154.123]:54929 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232786AbhDOKw2 (ORCPT ); Thu, 15 Apr 2021 06:52:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1618483925; x=1650019925; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gH+P3u9QqmYU3zqS64hGGjXJzweivpLPH2/q118Kpho=; b=JjWM3Za4xSRpm+PJ4tI7Dc9Exzs6PvhFkUiJkbNF9F08hjcs9nwL8N0z sCP/QkrchKan3G1VGkWpIbXCXAwBGMLg5yvUoBnmEkiXo+ixG9b4WOjTB P6R3pMUSzrQAKsKmgvHwDcFY3zVMlJsKbrOwdFLf63sqltlLwU4ecItpr G5G/swMzwunMt1LxobXrU1gVuL9gs2ZQjlgAR9JCOw7REq6HDgJVknfj7 aJdaLGJU3ZOMaJrGwld9Au4AkPVrS1oP1KqMjlRfYUye+j16UvwEo/rtn XBZZ9P7MgYonuUzxeZ7UI6ciaD+AYNS8Q3rc7FLjuFe47uRibWRmmP8G5 g==; IronPort-SDR: oEDTGLD9flQz/sZt1ISMaHIsGHYcKstu4MD0t7x9AHg2mvLhSaKKL3VBAClnYsLZGJou+/fhLP SP+GebcOpks9aC3537OuMYDn+3vbOCohjDK/Pwk2aQRDpyMu8P1hB27B+lCxPkrXbq9V1OH/Al mLXrF8ieoW31d5x3vX+3VoslhIGs5kUB0LWgJoX0s0LVwfTEVr9hDN+v1LYI610R1Ywn0CIvCK PPoi8frbKyUR+3VzLC6cb0g2odwwkFohPQKTtU0ZZVOY4YMkx7cWB4GzFcV0frjWBfCefIbc/o DyU= X-IronPort-AV: E=Sophos;i="5.82,223,1613458800"; d="scan'208";a="113688537" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Apr 2021 03:52:05 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 15 Apr 2021 03:52:04 -0700 Received: from m18063-ThinkPad-T460p.mchp-main.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Thu, 15 Apr 2021 03:52:02 -0700 From: Claudiu Beznea To: , , , , CC: , , , Claudiu Beznea Subject: [PATCH v3 18/24] ARM: at91: pm: add sama7g5 ddr phy controller Date: Thu, 15 Apr 2021 13:50:04 +0300 Message-ID: <20210415105010.569620-19-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210415105010.569620-1-claudiu.beznea@microchip.com> References: <20210415105010.569620-1-claudiu.beznea@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org SAMA7G5 self-refresh procedure accesses also the DDR PHY registers. Adapt the code so that the at91_dt_ramc() to look also for DDR PHYs, in case it is mandatory. Signed-off-by: Claudiu Beznea --- arch/arm/mach-at91/pm.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 5dc942a2012d..4dec7216a80e 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -552,7 +552,12 @@ static const struct of_device_id ramc_ids[] __initconst = { { /*sentinel*/ } }; -static __init void at91_dt_ramc(void) +static const struct of_device_id ramc_phy_ids[] __initconst = { + { .compatible = "microchip,sama7g5-ddr3phy", }, + { /* Sentinel. */ }, +}; + +static __init void at91_dt_ramc(bool phy_mandatory) { struct device_node *np; const struct of_device_id *of_id; @@ -578,6 +583,16 @@ static __init void at91_dt_ramc(void) if (!idx) panic(pr_fmt("unable to find compatible ram controller node in dtb\n")); + /* Lookup for DDR PHY node, if any. */ + for_each_matching_node_and_match(np, ramc_phy_ids, &of_id) { + soc_pm.data.ramc_phy = of_iomap(np, 0); + if (!soc_pm.data.ramc_phy) + panic(pr_fmt("unable to map ramc phy cpu registers\n")); + } + + if (phy_mandatory && !soc_pm.data.ramc_phy) + panic(pr_fmt("DDR PHY is mandatory!\n")); + if (!standby) { pr_warn("ramc no standby function available\n"); return; @@ -936,7 +951,7 @@ void __init at91rm9200_pm_init(void) soc_pm.data.standby_mode = AT91_PM_STANDBY; soc_pm.data.suspend_mode = AT91_PM_ULP0; - at91_dt_ramc(); + at91_dt_ramc(false); /* * AT91RM9200 SDRAM low-power mode cannot be used with self-refresh. @@ -960,7 +975,7 @@ void __init sam9x60_pm_init(void) at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps)); - at91_dt_ramc(); + at91_dt_ramc(false); at91_pm_init(NULL); soc_pm.ws_ids = sam9x60_ws_ids; @@ -980,7 +995,7 @@ void __init at91sam9_pm_init(void) soc_pm.data.standby_mode = AT91_PM_STANDBY; soc_pm.data.suspend_mode = AT91_PM_ULP0; - at91_dt_ramc(); + at91_dt_ramc(false); at91_pm_init(at91sam9_idle); } @@ -994,7 +1009,7 @@ void __init sama5_pm_init(void) return; at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); - at91_dt_ramc(); + at91_dt_ramc(false); at91_pm_init(NULL); } @@ -1015,7 +1030,7 @@ void __init sama5d2_pm_init(void) at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps)); - at91_dt_ramc(); + at91_dt_ramc(false); at91_pm_init(NULL); soc_pm.ws_ids = sama5d2_ws_ids;