From patchwork Tue Oct 30 16:57:14 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Majewski?= X-Patchwork-Id: 195557 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 2C6B82C007F for ; Wed, 31 Oct 2012 04:03:55 +1100 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 7CB044A51B; Tue, 30 Oct 2012 18:01:07 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3Nx6e8MDH60o; Tue, 30 Oct 2012 18:01:07 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 1E5B44A353; Tue, 30 Oct 2012 17:59:46 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 3059B4A316 for ; Tue, 30 Oct 2012 17:59:32 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id B3Uh+lnWPIFM for ; Tue, 30 Oct 2012 17:59:30 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) by theia.denx.de (Postfix) with ESMTP id 665FD4A23B for ; Tue, 30 Oct 2012 17:58:36 +0100 (CET) Received: from epcpsbgm2.samsung.com (epcpsbgm2 [203.254.230.27]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MCP00E6JTRI7J70@mailout2.samsung.com> for u-boot@lists.denx.de; Wed, 31 Oct 2012 01:58:36 +0900 (KST) X-AuditID: cbfee61b-b7f616d00000319b-ce-5090073c06ec Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id F5.D2.12699.C3700905; Wed, 31 Oct 2012 01:58:36 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MCP009BOTRPFA00@mmp2.samsung.com> for u-boot@lists.denx.de; Wed, 31 Oct 2012 01:58:36 +0900 (KST) From: Lukasz Majewski To: u-boot@lists.denx.de Date: Tue, 30 Oct 2012 17:57:14 +0100 Message-id: <1351616239-21079-20-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1351616239-21079-1-git-send-email-l.majewski@samsung.com> References: <1351616239-21079-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMJMWRmVeSWpSXmKPExsVy+t9jQV0b9gkBBmsPi1u83dvJ7sDocfbO DsYAxigum5TUnMyy1CJ9uwSujAcTW5gL5gpVrF31l7mBcRJ/FyMnh4SAicSqnRsYIWwxiQv3 1rN1MXJxCAlMZ5TY+GM7lLOYSWLWw4UsIFVsAnoSn+8+ZQKxRQQkJH71X2UEKWIW2MEo0Xzy LBtIQlggXeLFlglgY1kEVCWe3HgHZvMKuEtM6DzFBLFOXuLp/T6geg4OTqD4ttX5IGEhATeJ 19+vsU9g5F3AyLCKUTS1ILmgOCk910ivODG3uDQvXS85P3cTI9jrz6R3MK5qsDjEKMDBqMTD a/CvP0CINbGsuDL3EKMEB7OSCO+S30Ah3pTEyqrUovz4otKc1OJDjNIcLErivM0eKQFCAumJ JanZqakFqUUwWSYOTqkGxv5ppZFZwRIMCmsDTML7l7ktnSUycy+f18SdDo227zmKXc4/PXVp /emCHVKKzwztVtglRCs6rXRTEor7H2b69FTxYda+lSfuFSW9rFm+rdd8Tsec3ISAYt+jvBJK J1ibhZ49VWSsnPnfXy+OPz7fSfMJ05WvopIahuXSjH4Jct/d74d0mUcpsRRnJBpqMRcVJwIA c/QvcvYBAAA= Cc: Tom Rini , Kyungmin Park Subject: [U-Boot] [PATCH v4 19/24] arm:trats:pmic: Power consumption reduction state for Samsung's TRATS board X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de When charging battery is necessary, the development board needs to be turned into low power mode for better efficiency. Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Cc: Minkyu Kang --- Changes for v2: - None Changes for v3: - None Changes for v4: - None --- board/samsung/trats/trats.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 41 insertions(+), 0 deletions(-) diff --git a/board/samsung/trats/trats.c b/board/samsung/trats/trats.c index 5c23744..a8a97bf 100644 --- a/board/samsung/trats/trats.c +++ b/board/samsung/trats/trats.c @@ -89,6 +89,47 @@ void i2c_init_board(void) s5p_gpio_direction_output(&gpio2->y4, 1, 1); } +static void trats_low_power_mode(void) +{ + struct exynos4_clock *clk = + (struct exynos4_clock *)samsung_get_base_clock(); + struct exynos4_power *pwr = + (struct exynos4_power *)samsung_get_base_power(); + + /* Power down CORE1 */ + writel(0x0, &pwr->arm_core1_configuration); + + /* Change the APLL frequency */ + writel(0xa0c80604, &clk->apll_con0); + /* Change CPU0 clock divider */ + writel(0x00000100, &clk->div_cpu0); + /* CLK_DIV_STAT_CPU0 - wait until clock gets stable */ + while (readl(&clk->div_stat_cpu0) & 0x1111111) + ; + + /* Change clock divider ratio for DMC */ + writel(0x13113117, &clk->div_dmc0); + while (readl(&clk->div_stat_dmc0) & 0x11111111) + ; + + /* Turn off unnecessary power domains */ + writel(0x0, &pwr->xxti_configuration); /* XXTI */ + writel(0x0, &pwr->cam_configuration); /* CAM */ + writel(0x0, &pwr->tv_configuration); /* TV */ + writel(0x0, &pwr->mfc_configuration); /* MFC */ + writel(0x0, &pwr->g3d_configuration); /* G3D */ + writel(0x0, &pwr->gps_configuration); /* GPS */ + writel(0x0, &pwr->gps_alive_configuration); /* GPS_ALIVE */ + + /* Turn off unnecessary clocks */ + writel(0x0, &clk->gate_ip_cam); /* CAM */ + writel(0x0, &clk->gate_ip_tv); /* TV */ + writel(0x0, &clk->gate_ip_mfc); /* MFC */ + writel(0x0, &clk->gate_ip_g3d); /* G3D */ + writel(0x0, &clk->gate_ip_image); /* IMAGE */ + writel(0x0, &clk->gate_ip_gps); /* GPS */ +} + static int pmic_init_max8997(void) { struct pmic *p = pmic_get("MAX8997_PMIC");