From patchwork Thu Jun 6 14:16:40 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lubomir Popov X-Patchwork-Id: 249430 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 92C252C007C for ; Fri, 7 Jun 2013 00:17:43 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 9E3204A029; Thu, 6 Jun 2013 16:17:40 +0200 (CEST) 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 M82qyFmUR-RT; Thu, 6 Jun 2013 16:17:40 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 609044A02C; Thu, 6 Jun 2013 16:17:38 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id AE1B54A02C for ; Thu, 6 Jun 2013 16:17:35 +0200 (CEST) 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 GfFoixMwHjio for ; Thu, 6 Jun 2013 16:17:30 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 BL_NJABL=ERR(-1.5) (only DNSBL check requested) Received: from extserv.mm-sol.com (ns.mm-sol.com [212.124.72.66]) by theia.denx.de (Postfix) with ESMTPS id 250914A029 for ; Thu, 6 Jun 2013 16:17:22 +0200 (CEST) Received: from intsrv.int.mm-sol.com (unknown [172.18.0.3]) by extserv.mm-sol.com (Postfix) with ESMTP id 9F5D3C640; Thu, 6 Jun 2013 17:17:21 +0300 (EEST) Received: from localhost (localhost [127.0.0.1]) by intsrv.int.mm-sol.com (Postfix) with ESMTP id 71589FC2BFD; Thu, 6 Jun 2013 17:17:21 +0300 (EEST) X-Virus-Scanned: by amavisd-new-2.7.1 (20120429) Received: from intsrv.int.mm-sol.com ([127.0.0.1]) by localhost (mail.mm-sol.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hsF09oERJ3vp; Thu, 6 Jun 2013 17:17:13 +0300 (EEST) Received: from [172.20.1.4] (unknown [172.20.1.4]) by intsrv.int.mm-sol.com (Postfix) with ESMTPS id 7DD5DFC2B81; Thu, 6 Jun 2013 17:17:13 +0300 (EEST) Message-ID: <51B099C8.30802@mm-sol.com> Date: Thu, 06 Jun 2013 17:16:40 +0300 From: Lubomir Popov Organization: MM Solutions AD User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 MIME-Version: 1.0 To: u-boot Cc: Tom Rini Subject: [U-Boot] [PATCH V4] ARM: OMAP5: Power: Add more functionality to Palmas driver 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: , Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de Add some useful functions, and the corresponding definitions. Add support for powering on the dra7xx_evm SD/MMC LDO (courtesy Lokesh Vutla ). Signed-off-by: Lubomir Popov Reviewed-by: Tom Rini --- V4 checkpatch-clean (except for one long printf string). V3 does some cleanup and adds support for the dra7xx_evm board (power on LDO1 used for the SD/MMC interface). V2 aligns to changed PMIC name (and file names accordingly) from twl6035 to Palmas and is based on current u-boot-ti master. drivers/power/palmas.c | 134 +++++++++++++++++++++++++++++++++++++++++++----- include/palmas.h | 90 +++++++++++++++++++++++++++++--- 2 files changed, 205 insertions(+), 19 deletions(-) diff --git a/drivers/power/palmas.c b/drivers/power/palmas.c index 09c832d..07b9815 100644 --- a/drivers/power/palmas.c +++ b/drivers/power/palmas.c @@ -25,28 +25,138 @@ void palmas_init_settings(void) { - return; +#ifdef CONFIG_PALMAS_SMPS7_FPWM + int err; + /* + * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to + * forced PWM mode. This reduces noise (but affects efficiency). + */ + u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM; + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val); + if (err) + printf("palmas: could not force PWM for SMPS7: err = %d\n", + err); +#endif } int palmas_mmc1_poweron_ldo(void) { u8 val = 0; - /* set LDO9 TWL6035 to 3V */ - val = 0x2b; /* (3 -.9)*28 +1 */ - - if (palmas_i2c_write_u8(0x48, LDO9_VOLTAGE, val)) { - printf("twl6035: could not set LDO9 voltage.\n"); +#if defined(CONFIG_DRA7XX) + /* + * Currently valid for the dra7xx_evm board: + * Set TPS659038 LDO1 to 3.0 V + */ + val = LDO_VOLT_3V0; + if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) { + printf("tps65903x: could not set LDO1 voltage.\n"); + return 1; + } + /* TURN ON LDO1 */ + val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; + if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) { + printf("tps65903x: could not turn on LDO1.\n"); return 1; } + return 0; +#else + /* + * We assume that this is a OMAP543X + TWL603X board: + * Set TWL6035/37 LDO9 to 3.0 V + */ + val = LDO_VOLT_3V0; + return twl603x_mmc1_set_ldo9(val); +#endif +} - /* TURN ON LDO9 */ - val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE; +/* + * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are + * powered by an external 3.3 V regulator, while the output of LDO9 + * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that + * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards). + */ +int twl603x_mmc1_set_ldo9(u8 vsel) +{ + u8 cval = 0, vval = 0; /* Off by default */ + int err; - if (palmas_i2c_write_u8(0x48, LDO9_CTRL, val)) { - printf("twl6035: could not turn on LDO9.\n"); - return 1; + if (vsel) { + /* Turn on */ + if (vsel > LDO_VOLT_3V3) { + /* Put LDO9 in bypass */ + cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE; + vval = LDO_VOLT_3V3; + } else { + cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; + vval = vsel & 0x3f; + } + } + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval); + if (err) { + printf("twl603x: could not set LDO9 %s: err = %d\n", + vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err); + return err; } + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval); + if (err) + printf("twl603x: could not turn %s LDO9: err = %d\n", + cval ? "on" : "off", err); + return err; +} - return 0; +#ifdef CONFIG_PALMAS_AUDPWR +/* + * Turn audio codec power and 32 kHz clock on/off. Use for + * testing OMAP543X + TWL603X + TWL604X boards only. + */ +int twl603x_audio_power(u8 on) +{ + u8 cval = 0, vval = 0, c32k = 0; + int err; + + if (on) { + vval = SMPS_VOLT_2V1; + cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO; + c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; + } + /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */ + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval); + if (err) { + printf("twl603x: could not set SMPS9 voltage: err = %d\n", + err); + return err; + } + /* Turn on or off SMPS9 */ + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval); + if (err) { + printf("twl603x: could not turn SMPS9 %s: err = %d\n", + cval ? "on" : "off", err); + return err; + } + /* Output 32 kHz clock on or off */ + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k); + if (err) + printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n", + c32k ? "on" : "off", err); + return err; } +#endif + +/* + * Enable/disable back-up battery (or super cap) charging on TWL6035/37. + * Please use defined BB_xxx values. + */ +int twl603x_enable_bb_charge(u8 bb_fields) +{ + u8 val = bb_fields & 0x0f; + int err; + + val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN); + err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val); + if (err) + printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n", + val, err); + return err; +} + diff --git a/include/palmas.h b/include/palmas.h index 3b18589..aff48b5 100644 --- a/include/palmas.h +++ b/include/palmas.h @@ -26,17 +26,90 @@ #include #include -/* I2C chip addresses */ -#define PALMAS_CHIP_ADDR 0x48 +/* I2C chip addresses, TW6035/37 */ +#define TWL603X_CHIP_P1 0x48 /* Page 1 */ +#define TWL603X_CHIP_P2 0x49 /* Page 2 */ +#define TWL603X_CHIP_P3 0x4a /* Page 3 */ -/* 0x1XY translates to page 1, register address 0xXY */ +/* TPS659038/39 */ +#define TPS65903X_CHIP_P1 0x58 /* Page 1 */ + +/* Page 1 registers (0x1XY translates to page 1, reg addr 0xXY): */ + +/* LDO1 control/voltage */ +#define LDO1_CTRL 0x50 +#define LDO1_VOLTAGE 0x51 + +/* LDO9 control/voltage */ #define LDO9_CTRL 0x60 #define LDO9_VOLTAGE 0x61 -/* Bit field definitions for LDOx_CTRL */ -#define LDO_ON (1 << 4) -#define LDO_MODE_SLEEP (1 << 2) -#define LDO_MODE_ACTIVE (1 << 0) +/* LDOUSB control/voltage */ +#define LDOUSB_CTRL 0x64 +#define LDOUSB_VOLTAGE 0x65 + +/* Control of 32 kHz audio clock */ +#define CLK32KGAUDIO_CTRL 0xd5 + +/* SYSEN2_CTRL for VCC_3v3_AUX supply on the sEVM */ +#define SYSEN2_CTRL 0xd9 + +/* + * Bit field definitions for LDOx_CTRL, SYSENx_CTRL + * and some other xxx_CTRL resources: + */ +#define LDO9_BYP_EN (1 << 6) /* LDO9 only! */ +#define RSC_STAT_ON (1 << 4) /* RO status bit! */ +#define RSC_MODE_SLEEP (1 << 2) +#define RSC_MODE_ACTIVE (1 << 0) + +/* Some LDO voltage values */ +#define LDO_VOLT_OFF 0 +#define LDO_VOLT_1V8 0x13 +#define LDO_VOLT_3V0 0x2b +#define LDO_VOLT_3V3 0x31 +/* Request bypass, LDO9 only */ +#define LDO9_BYPASS 0x3f + +/* SMPS7_CTRL */ +#define SMPS7_CTRL 0x30 + +/* SMPS9_CTRL */ +#define SMPS9_CTRL 0x38 +#define SMPS9_VOLTAGE 0x3b + +/* Bit field definitions for SMPSx_CTRL */ +#define SMPS_MODE_ACT_AUTO 1 +#define SMPS_MODE_ACT_ECO 2 +#define SMPS_MODE_ACT_FPWM 3 +#define SMPS_MODE_SLP_AUTO (1 << 2) +#define SMPS_MODE_SLP_ECO (2 << 2) +#define SMPS_MODE_SLP_FPWM (3 << 2) + +/* + * Some popular SMPS voltages, all with RANGE=1; note + * that RANGE cannot be changed on the fly + */ +#define SMPS_VOLT_OFF 0 +#define SMPS_VOLT_1V2 0x90 +#define SMPS_VOLT_1V8 0xae +#define SMPS_VOLT_2V1 0xbd +#define SMPS_VOLT_3V0 0xea +#define SMPS_VOLT_3V3 0xf9 + +/* Backup Battery & VRTC Control */ +#define BB_VRTC_CTRL 0xa8 +/* Bit definitions for BB_VRTC_CTRL */ +#define VRTC_EN_SLP (1 << 6) +#define VRTC_EN_OFF (1 << 5) +#define VRTC_PWEN (1 << 4) +#define BB_LOW_ICHRG (1 << 3) +#define BB_HIGH_ICHRG (0 << 3) +#define BB_VSEL_3V0 (0 << 1) +#define BB_VSEL_2V5 (1 << 1) +#define BB_VSEL_3V15 (2 << 1) +#define BB_VSEL_VBAT (3 << 1) +#define BB_CHRG_EN (1 << 0) /* * Functions to read and write from TPS659038/TWL6035/TWL6037 @@ -54,5 +127,8 @@ static inline int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *val) void palmas_init_settings(void); int palmas_mmc1_poweron_ldo(void); +int twl603x_mmc1_set_ldo9(u8 vsel); +int twl603x_audio_power(u8 on); +int twl603x_enable_bb_charge(u8 bb_fields); #endif /* PALMAS_H */