From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 05 Feb 2025 10:48:59 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tfc1i-008kW7-2f for lore@lore.pengutronix.de; Wed, 05 Feb 2025 10:48:59 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tfc1i-0004dE-CX for lore@pengutronix.de; Wed, 05 Feb 2025 10:48:59 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=hge3dXWqLmLWSqso6zRvO4xgcqzpY7do7aE8+obVuhI=; b=W/nwvNhki2bJ8+TaUiYRLD+/Tk 8YKxE7NMjQFG8HujOVxpcoaPzbDQ7nfaXB/921gL23ackOBrJHRHcY+QCR0UimDrtfMZEitsJeZ6v cBvruHg/4NAsWnSD8V+IwYktYFYHw7toCZr9z6ThJ6jq6Q2k15fB+hnhbewEDde1eAA1dQHVKF+5Y rVbxBY+YWL57Oz/VYt8srthzfd33xJ4XqWAUVJbMlu60H5mMHnYfJRrX+r83HRtLKekleA63zmom4 AJoMLAYMLPfr8nBa5rJuXoDFcBiMVskb7mX3oIekL8ZbvLQMxpf+l590HSoi416BGU9thurMVnQcR TcaUm4eg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tfc16-00000002kGv-3f1y; Wed, 05 Feb 2025 09:48:20 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tfc12-00000002kDV-49PR for barebox@lists.infradead.org; Wed, 05 Feb 2025 09:48:19 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tfc0z-00048G-IM; Wed, 05 Feb 2025 10:48:13 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tfc0z-003c2c-17; Wed, 05 Feb 2025 10:48:13 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tfc0z-00F0Mw-0s; Wed, 05 Feb 2025 10:48:13 +0100 From: Sascha Hauer Date: Wed, 05 Feb 2025 10:48:09 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250205-k3-emmc-v1-1-06679246be41@pengutronix.de> References: <20250205-k3-emmc-v1-0-06679246be41@pengutronix.de> In-Reply-To: <20250205-k3-emmc-v1-0-06679246be41@pengutronix.de> To: "open list:BAREBOX" X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1738748893; l=1876; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=GQ82rSUmCtRl4bVjM5EuLLazXqZE/mDpxsJ0vqp9ofY=; b=lHBqIYYgzUkv7C040lJU/C1Q3AwDYImlaaLIbmsFa6jaAZ31vgIEztwKuSlqmrUOfsJdHXBzz kE4fLQzj8PuAsKqRj3FL/S7kbcz1KlioQ+uV9YZRU2kHk/2jwtZgb79 X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250205_014817_073064_E8475D9C X-CRM114-Status: GOOD ( 11.94 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 1/9] ARM: k3: Add function to enable 32k crystal X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The external 32k crystal is optional and by default LFOSC0 is sourced by a RC oscillator. This adds a function to be called by board code when the 32k crystal is present and shall be used to source LFOSC0 from the crystal. Signed-off-by: Sascha Hauer --- arch/arm/mach-k3/common.c | 20 ++++++++++++++++++++ include/mach/k3/common.h | 1 + 2 files changed, 21 insertions(+) diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c index 3922a0ff19..c779e873c9 100644 --- a/arch/arm/mach-k3/common.c +++ b/arch/arm/mach-k3/common.c @@ -170,6 +170,26 @@ static void of_delete_node_path(struct device_node *root, const char *path) of_delete_node(np); } +#define MCU_CTRL_MMR0_BASE 0x04500000 +#define MCU_CTRL_LFXOSC_CTRL (MCU_CTRL_MMR0_BASE + 0x8038) +#define MCU_CTRL_LFXOSC_32K_DISABLE_VAL BIT(7) +#define MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL (0x3) +#define MCU_CTRL_DEVICE_CLKOUT_32K_CTRL (MCU_CTRL_MMR0_BASE + 0x8058) + +void am625_enable_32k_crystal(void) +{ + u32 val; + + /* Enable 32k crystal */ + val = readl(MCU_CTRL_LFXOSC_CTRL); + val &= ~(MCU_CTRL_LFXOSC_32K_DISABLE_VAL); + writel(val, MCU_CTRL_LFXOSC_CTRL); + + /* select 32k clock from LFOSC0 */ + writel(MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL, + MCU_CTRL_DEVICE_CLKOUT_32K_CTRL); +} + #define CTRLMMR_WKUP_JTAG_DEVICE_ID (AM625_WKUP_CTRL_MMR0_BASE + 0x18) #define JTAG_DEV_CORE_NR GENMASK(21, 19) diff --git a/include/mach/k3/common.h b/include/mach/k3/common.h index d7ceea51d7..3377dc8895 100644 --- a/include/mach/k3/common.h +++ b/include/mach/k3/common.h @@ -6,5 +6,6 @@ void am625_get_bootsource(enum bootsource *src, int *instance); u64 am625_sdram_size(void); void am625_register_dram(void); +void am625_enable_32k_crystal(void); #endif /* __MACH_K3_COMMON_H */ -- 2.39.5