From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.x-arc.de ([217.6.246.34] helo=root.phytec.de) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1Sukm3-00069e-10 for barebox@lists.infradead.org; Fri, 27 Jul 2012 13:40:12 +0000 Received: from idefix.phytec.de (idefix.phytec.de [172.16.0.10]) by root.phytec.de (Postfix) with ESMTP id 396D3BF0EB for ; Fri, 27 Jul 2012 15:40:05 +0200 (CEST) From: Jan Weitzel Date: Fri, 27 Jul 2012 15:40:02 +0200 Message-Id: <1343396404-10288-2-git-send-email-j.weitzel@phytec.de> In-Reply-To: <1343396404-10288-1-git-send-email-j.weitzel@phytec.de> References: <1343396404-10288-1-git-send-email-j.weitzel@phytec.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/3] Add support for OMAP4460 TPS62361 To: barebox@lists.infradead.org based on: [U-Boot] [PATCH v 4/5] omap4: support TPS programming TPS62361 is the new power supply used in OMAP4460 that supplies vdd_mpu. VCORE1 from Phoenix supplies vdd_core and VCORE2 supplies vdd_iva. VCORE3 is not used in OMAP4460. Signed-off-by: F. Gasnier fabrice.gasnier@cenosys.com Signed-off-by: Jan Weitzel --- arch/arm/mach-omap/include/mach/omap4-clock.h | 15 +++++++++ arch/arm/mach-omap/include/mach/omap4-silicon.h | 9 +++++- arch/arm/mach-omap/omap4_clock.c | 19 +++++++++++ arch/arm/mach-omap/omap4_generic.c | 39 +++++++++++++++++++++- 4 files changed, 79 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-omap/include/mach/omap4-clock.h b/arch/arm/mach-omap/include/mach/omap4-clock.h index 0a31d09..391ee63 100644 --- a/arch/arm/mach-omap/include/mach/omap4-clock.h +++ b/arch/arm/mach-omap/include/mach/omap4-clock.h @@ -271,6 +271,20 @@ #define PLL_FAST_RELOCK_BYPASS 6 /* CORE */ #define PLL_LOCK 7 /* MPU, IVA, CORE & PER */ +/* TPS */ +#define TPS62361_I2C_SLAVE_ADDR 0x60 +#define TPS62361_REG_ADDR_SET0 0x0 +#define TPS62361_REG_ADDR_SET1 0x1 +#define TPS62361_REG_ADDR_SET2 0x2 +#define TPS62361_REG_ADDR_SET3 0x3 +#define TPS62361_REG_ADDR_CTRL 0x4 +#define TPS62361_REG_ADDR_TEMP 0x5 +#define TPS62361_REG_ADDR_RMP_CTRL 0x6 +#define TPS62361_REG_ADDR_CHIP_ID 0x8 +#define TPS62361_REG_ADDR_CHIP_ID_2 0x9 + +#define TPS62361_BASE_VOLT_MV 500 + /* Used to index into DPLL parameter tables */ struct dpll_param { unsigned int m; @@ -317,4 +331,5 @@ void omap4_configure_core_dpll_no_lock(const struct dpll_param *param); void omap4_lock_core_dpll(void); void omap4_lock_core_dpll_shadow(const struct dpll_param *param); void omap4_enable_all_clocks(void); +void omap4_do_scale_tps62361(u32 reg, u32 volt_mv); diff --git a/arch/arm/mach-omap/include/mach/omap4-silicon.h b/arch/arm/mach-omap/include/mach/omap4-silicon.h index c785475..d5517c5 100644 --- a/arch/arm/mach-omap/include/mach/omap4-silicon.h +++ b/arch/arm/mach-omap/include/mach/omap4-silicon.h @@ -60,6 +60,13 @@ #define OMAP44XX_PRM_VC_VAL_BYPASS (OMAP44XX_WAKEUP_L4_IO_BASE + 0x7ba0) #define OMAP44XX_PRM_VC_CFG_I2C_MODE (OMAP44XX_WAKEUP_L4_IO_BASE + 0x7ba8) #define OMAP44XX_PRM_VC_CFG_I2C_CLK (OMAP44XX_WAKEUP_L4_IO_BASE + 0x7bac) +#define OMAP44XX_PRM_VC_VAL_BYPASS_VALID_BIT 0x1000000 +#define OMAP44XX_PRM_VC_VAL_BYPASS_SLAVEADDR_SHIFT 0 +#define OMAP44XX_PRM_VC_VAL_BYPASS_SLAVEADDR_MASK 0x7F +#define OMAP44XX_PRM_VC_VAL_BYPASS_REGADDR_SHIFT 8 +#define OMAP44XX_PRM_VC_VAL_BYPASS_REGADDR_MASK 0xFF +#define OMAP44XX_PRM_VC_VAL_BYPASS_DATA_SHIFT 16 +#define OMAP44XX_PRM_VC_VAL_BYPASS_DATA_MASK 0xFF /* IRQ */ #define OMAP44XX_PRM_IRQSTATUS_MPU_A9 (OMAP44XX_WAKEUP_L4_IO_BASE + 0x6010) @@ -178,6 +185,6 @@ struct dpll_param; void omap4_ddr_init(const struct ddr_regs *, const struct dpll_param *); void omap4_power_i2c_send(u32); unsigned int omap4_revision(void); -noinline int omap4_scale_vcores(void); +noinline int omap4_scale_vcores(unsigned vsel0_pin); #endif diff --git a/arch/arm/mach-omap/omap4_clock.c b/arch/arm/mach-omap/omap4_clock.c index 3ab01f0..564a748 100644 --- a/arch/arm/mach-omap/omap4_clock.c +++ b/arch/arm/mach-omap/omap4_clock.c @@ -1,6 +1,7 @@ #include #include #include +#include #include #define LDELAY 12000000 @@ -378,3 +379,21 @@ void omap4_enable_all_clocks(void) sr32(CM_L3INIT_USBPHY_CLKCTRL, 0, 32, 0x301); } +void omap4_do_scale_tps62361(u32 reg, u32 volt_mv) +{ + u32 temp, step; + + step = volt_mv - TPS62361_BASE_VOLT_MV; + step /= 10; + + temp = TPS62361_I2C_SLAVE_ADDR | + (reg << OMAP44XX_PRM_VC_VAL_BYPASS_REGADDR_SHIFT) | + (step << OMAP44XX_PRM_VC_VAL_BYPASS_DATA_SHIFT) | + OMAP44XX_PRM_VC_VAL_BYPASS_VALID_BIT; + debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step); + + writel(temp, OMAP44XX_PRM_VC_VAL_BYPASS); + if (!wait_on_value(OMAP44XX_PRM_VC_VAL_BYPASS_VALID_BIT, 0, + OMAP44XX_PRM_VC_VAL_BYPASS, LDELAY)) + puts("Scaling voltage failed for vdd_mpu from TPS\n"); +} diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c index de69934..07aa2b4 100644 --- a/arch/arm/mach-omap/omap4_generic.c +++ b/arch/arm/mach-omap/omap4_generic.c @@ -7,6 +7,7 @@ #include #include #include +#include /* * The following several lines are taken from U-Boot to support @@ -466,7 +467,7 @@ enum omap_boot_src omap4_bootsrc(void) #define I2C_SLAVE 0x12 -noinline int omap4_scale_vcores(void) +noinline int omap4_scale_vcores(unsigned vsel0_pin) { unsigned int rev = omap4_revision(); @@ -476,8 +477,41 @@ noinline int omap4_scale_vcores(void) writel(0, OMAP44XX_PRM_VC_CFG_I2C_MODE); writel(0x6026, OMAP44XX_PRM_VC_CFG_I2C_CLK); + /* TPS - supplies vdd_mpu on 4460 */ + if (rev >= OMAP4460_ES1_0) { + /* + * Setup SET1 and SET0 with right values so that kernel + * can use either of them based on its needs. + */ + omap4_do_scale_tps62361(TPS62361_REG_ADDR_SET0, 1430); + omap4_do_scale_tps62361(TPS62361_REG_ADDR_SET1, 1430); + + /* + * Select SET1 in TPS62361: + * VSEL1 is grounded on board. So the following selects + * VSEL1 = 0 and VSEL0 = 1 + */ + gpio_direction_output(vsel0_pin, 0); + gpio_set_value(vsel0_pin, 1); + } + /* set VCORE1 force VSEL */ - omap4_power_i2c_send((0x3A55 << 8) | I2C_SLAVE); + /* + * 4430 : supplies vdd_mpu + * Setting a high voltage for Nitro mode as smart reflex is not enabled. + * We use the maximum possible value in the AVS range because the next + * higher voltage in the discrete range (code >= 0b111010) is way too + * high + * + * 4460 : supplies vdd_core + * + */ + if (rev < OMAP4460_ES1_0) + /* 0x55: i2c addr, 3A: ~ 1430 mvolts*/ + omap4_power_i2c_send((0x3A55 << 8) | I2C_SLAVE); + else + /* 0x55: i2c addr, 28: ~ 1200 mvolts*/ + omap4_power_i2c_send((0x2855 << 8) | I2C_SLAVE); /* FIXME: set VCORE2 force VSEL, Check the reset value */ omap4_power_i2c_send((0x295B << 8) | I2C_SLAVE); @@ -490,6 +524,7 @@ noinline int omap4_scale_vcores(void) case OMAP4430_ES2_1: omap4_power_i2c_send((0x2A61 << 8) | I2C_SLAVE); break; + /* > OMAP4460_ES1_0 : VCORE3 not connected */ } return 0; -- 1.7.0.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox