From patchwork Tue Oct 30 16:57:08 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: 195551 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 367FA2C008C for ; Wed, 31 Oct 2012 04:02:01 +1100 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id CBABE4A400; Tue, 30 Oct 2012 18:00:21 +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 Bl69AgCmpy4K; Tue, 30 Oct 2012 18:00:21 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 6D9464A27D; Tue, 30 Oct 2012 17:58:52 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 6852B4A220 for ; Tue, 30 Oct 2012 17:58:42 +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 4SHCg6OUwmzi for ; Tue, 30 Oct 2012 17:58:39 +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 mailout4.samsung.com (mailout4.samsung.com [203.254.224.34]) by theia.denx.de (Postfix) with ESMTP id E99334A233 for ; Tue, 30 Oct 2012 17:58:19 +0100 (CET) Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MCP00FZUTRCMBT0@mailout4.samsung.com> for u-boot@lists.denx.de; Wed, 31 Oct 2012 01:58:17 +0900 (KST) X-AuditID: cbfee61a-b7fa66d0000004cf-0e-50900729ec90 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 29.41.01231.92700905; Wed, 31 Oct 2012 01:58:17 +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 01:58:17 +0900 (KST) From: Lukasz Majewski To: u-boot@lists.denx.de Date: Tue, 30 Oct 2012 17:57:08 +0100 Message-id: <1351616239-21079-14-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+NgFnrIJMWRmVeSWpSXmKPExsVy+t9jQV1N9gkBBs9vGFq83dvJ7sDocfbO DsYAxigum5TUnMyy1CJ9uwSujNWzOpgKpvJUzL9yhqWBsZGri5GTQ0LARKJt7nIWCFtM4sK9 9WwgtpDAdEaJFd99uxi5gOzFTBIzZ/wCS7AJ6El8vvuUCcQWEZCQ+NV/lRGkiFlgB6NE88mz QEUcHMICcRJbZ+qA1LAIqErc3PeOGcTmFXCXOHS2nQ1imbzE0/t9YOWcQPFtq/Mh9rpJvP5+ jX0CI+8CRoZVjKKpBckFxUnpuYZ6xYm5xaV56XrJ+bmbGMEefya1g3Flg8UhRgEORiUeXsN/ /QFCrIllxZW5hxglOJiVRHiX/AYK8aYkVlalFuXHF5XmpBYfYpTmYFES5232SAkQEkhPLEnN Tk0tSC2CyTJxcEo1MG66pCx1+HON6QejrIVc7bNq0gPiTxhPW6B1d/69jEWV6xYFv+1+qJ5m deTlGp7AKXM4j8wVFrWdsP35g3Z+Vek9s/evdpwv78/1lZNTcKl4mPrs0lNarw/zrTZtESir vHr+4ZOWlYKRXJy/V8qv09LqiSmsEBfTWxzNt39jcOGLPzZTo0QvpyqxFGckGmoxFxUnAgBI hqpc9AEAAA== Cc: Tom Rini , Kyungmin Park Subject: [U-Boot] [PATCH v4 13/24] pmic:max8997: Function for calculating LDO internal register value 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 Function for calculating LDO internal register value from passed micro Volt. Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Cc: Stefano Babic --- Changes for v2: - MAX8997_LDO_MAX_VAL defined Changes for v3: - None Changes for v4: - None --- drivers/power/pmic/pmic_max8997.c | 16 ++++++++++++++++ include/power/max8997_pmic.h | 2 ++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c index 4e8283a..47ef7f6 100644 --- a/drivers/power/pmic/pmic_max8997.c +++ b/drivers/power/pmic/pmic_max8997.c @@ -26,6 +26,22 @@ #include #include +unsigned char max8997_reg_ldo(int uV) +{ + unsigned char ret; + if (uV <= 800000) + return 0; + if (uV >= 3950000) + return MAX8997_LDO_MAX_VAL; + ret = (uV - 800000) / 50000; + if (ret > MAX8997_LDO_MAX_VAL) { + printf("MAX8997 LDO SETTING ERROR (%duV) -> %u\n", uV, ret); + ret = MAX8997_LDO_MAX_VAL; + } + + return ret; +} + int pmic_init(unsigned char bus) { struct pmic *p = pmic_alloc(); diff --git a/include/power/max8997_pmic.h b/include/power/max8997_pmic.h index 1db7deb..03cac04 100644 --- a/include/power/max8997_pmic.h +++ b/include/power/max8997_pmic.h @@ -200,4 +200,6 @@ enum { EN_LDO = (0x3 << 6), }; +#define MAX8997_LDO_MAX_VAL 0x3F +unsigned char max8997_reg_ldo(int uV); #endif /* __MAX8997_PMIC_H_ */