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banners=-,-,- X-VirusChecked: Checked Received: (qmail 21190 invoked from network); 18 Dec 2018 08:06:33 -0000 Received: from unknown (HELO SVEX01005.wago.local) (217.237.185.178) by server-24.tower-223.messagelabs.com with AES128-SHA encrypted SMTP; 18 Dec 2018 08:06:33 -0000 Received: from SVEX01009.wago.local (10.1.103.227) by SVEX01005.wago.local (10.1.101.121) with Microsoft SMTP Server (TLS) id 14.3.408.0; Tue, 18 Dec 2018 09:06:32 +0100 Received: from lc010965.wago.local (10.1.101.132) by SVEX01009.wago.local (10.1.103.227) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1531.3; Tue, 18 Dec 2018 09:06:31 +0100 Received: by lc010965.wago.local (Postfix, from userid 11100404) id 9AA6F170069F; Tue, 18 Dec 2018 09:06:31 +0100 (CET) From: Christian Hohnstaedt To: Lee Jones CC: Liam Girdwood , Mark Brown , "Mark Rutland" , Rob Herring , "Tony Lindgren" , , , Subject: [PATCH 2/2] mfd: tps65218.c: Add input voltage options Date: Tue, 18 Dec 2018 09:05:56 +0100 Message-ID: <1545120356-7749-3-git-send-email-Christian.Hohnstaedt@wago.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545120356-7749-1-git-send-email-Christian.Hohnstaedt@wago.com> References: <1545120356-7749-1-git-send-email-Christian.Hohnstaedt@wago.com> MIME-Version: 1.0 X-Originating-IP: [10.1.101.132] X-ClientProxiedBy: SVEX01014.wago.local (10.1.103.232) To SVEX01009.wago.local (10.1.103.227) X-KSE-ServerInfo: SVEX01009.wago.local, 9 X-KSE-AttachmentFiltering-Interceptor-Info: protection disabled X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 18.12.2018 03:56:00 X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-PP-Proceessed: 81a9f692-418a-4f33-bb70-032f75efc73b X-PP-Proceessed: 8707ce24-8c4e-4a04-80f2-2a31f9152b06 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP These options apply to all regulators in this chip. strict-supply-voltage: Set STRICT flag in CONFIG1 under-voltage-limit: Select 2.75, 2.95, 3.25 or 3.35 V UVLO in CONFIG1 under-voltage-hysteresis: Select 200mV or 400mV UVLOHYS in CONFIG2 Signed-off-by: Christian Hohnstaedt --- drivers/mfd/tps65218.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c index 8bcdecf..f5e559b 100644 --- a/drivers/mfd/tps65218.c +++ b/drivers/mfd/tps65218.c @@ -211,6 +211,50 @@ static const struct of_device_id of_tps65218_match_table[] = { }; MODULE_DEVICE_TABLE(of, of_tps65218_match_table); +static void tps65218_options(struct tps65218 *tps) +{ + struct device *dev = tps->dev; + struct device_node *np = dev->of_node; + u32 pval; + + if (!of_property_read_u32(np, "strict-supply-voltage", &pval)) { + tps65218_update_bits(tps, TPS65218_REG_CONFIG1, + TPS65218_CONFIG1_STRICT, + pval ? TPS65218_CONFIG1_STRICT : 0, + TPS65218_PROTECT_L1); + dev_dbg(dev, "tps65218 strict-supply-voltage: %d\n", pval); + } + if (!of_property_read_u32(np, "under-voltage-hysteresis", &pval)) { + if (pval != 400000 && pval != 200000) { + dev_err(dev, + "under-voltage-hysteresis must be %d or %d\n", + 200000, 400000); + } else { + tps65218_update_bits(tps, TPS65218_REG_CONFIG2, + TPS65218_CONFIG2_UVLOHYS, + pval == 400000 ? TPS65218_CONFIG2_UVLOHYS : 0, + TPS65218_PROTECT_L1); + } + dev_dbg(dev, "tps65218 under-voltage-hysteresis: %d\n", pval); + } + if (!of_property_read_u32(np, "under-voltage-limit", &pval)) { + int i, vals[] = { 275, 295, 325, 335 }; + + for (i = 0; i < ARRAY_SIZE(vals); i++) { + if (pval == vals[i] * 10000) + break; + } + if (i < ARRAY_SIZE(vals)) { + tps65218_update_bits(tps, TPS65218_REG_CONFIG1, + TPS65218_CONFIG1_UVLO_MASK, i, + TPS65218_PROTECT_L1); + } else { + dev_err(dev, "Invalid under-voltage-limit: %d\n", pval); + } + dev_dbg(dev, "tps65218 under-voltage-limit: %d=%d\n", pval, i); + } +} + static int tps65218_probe(struct i2c_client *client, const struct i2c_device_id *ids) { @@ -249,6 +293,8 @@ static int tps65218_probe(struct i2c_client *client, tps->rev = chipid & TPS65218_CHIPID_REV_MASK; + tps65218_options(tps); + ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65218_cells, ARRAY_SIZE(tps65218_cells), NULL, 0, regmap_irq_get_domain(tps->irq_data));