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Commit 5246d01edd8935e04cdf79a5b9a03874509a31b1

Authored by Grazvydas Ignotas
Committed by Sandeep Paulraj
1 parent 2391174048
Exists in master and in 54 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, imx_v2015.04_4.1.15_1.0.0_ga, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc-emmc-imx_v2014.04_3.10.53_1.1.0_ga, smarc-emmc-imx_v2014.04_3.14.28_1.0.0_ga, smarc-imx-l5.0.0_1.0.0-ga, smarc-imx6_v2018.03_4.14.98_2.0.0_ga, smarc-imx7_v2017.03_4.9.11_1.0.0_ga, smarc-imx7_v2018.03_4.14.98_2.0.0_ga, smarc-imx_v2014.04_3.14.28_1.0.0_ga, smarc-imx_v2015.04_4.1.15_1.0.0_ga, smarc-imx_v2017.03_4.9.11_1.0.0_ga, smarc-imx_v2017.03_4.9.88_2.0.0_ga, smarc-imx_v2017.03_o8.1.0_1.3.0_8m, smarc-imx_v2018.03_4.14.78_1.0.0_ga, smarc-m6.0.1_2.1.0-ga, smarc-n7.1.2_2.0.0-ga, smarc-rel_imx_4.1.15_2.0.0_ga, smarc_8m-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8m_00d0-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0, smarc_8mq_lf_v2020.04, ti-u-boot-2015.07, u-boot-2013.01.y, v2013.10, v2013.10-smarct33, v2013.10-smartmen, v2014.01, v2014.04, v2014.04-smarct33, v2014.04-smarct33-emmc, v2014.04-smartmen, v2014.07, v2014.07-smarct33, v2014.07-smartmen, v2015.07-smarct33, v2015.07-smarct33-emmc, v2015.07-smarct4x, v2016.05-dlt, v2016.05-smarct3x, v2016.05-smarct3x-emmc, v2016.05-smarct4x, v2017.01-smarct3x, v2017.01-smarct3x-emmc, v2017.01-smarct4x

OMAP3: pandora: enable battery backup capacitor 

Pandora has a capacitor connected as backup battery, which allows
retaining RTC for some time while main battery is removed. Enable backup
battery charge function to charge that capacitor.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

Showing 1 changed file with 9 additions and 0 deletions Inline Diff

board/pandora/pandora.c
Diff comments   View file @ 5246d01
1 /* 1 /*
2 * (C) Copyright 2008 2 * (C) Copyright 2008
3 * Grazvydas Ignotas <notasas@gmail.com> 3 * Grazvydas Ignotas <notasas@gmail.com>
4 * 4 *
5 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by 5 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
6 * Richard Woodruff <r-woodruff2@ti.com> 6 * Richard Woodruff <r-woodruff2@ti.com>
7 * Syed Mohammed Khasim <khasim@ti.com> 7 * Syed Mohammed Khasim <khasim@ti.com>
8 * Sunil Kumar <sunilsaini05@gmail.com> 8 * Sunil Kumar <sunilsaini05@gmail.com>
9 * Shashi Ranjan <shashiranjanmca05@gmail.com> 9 * Shashi Ranjan <shashiranjanmca05@gmail.com>
10 * 10 *
11 * (C) Copyright 2004-2008 11 * (C) Copyright 2004-2008
12 * Texas Instruments, <www.ti.com> 12 * Texas Instruments, <www.ti.com>
13 * 13 *
14 * See file CREDITS for list of people who contributed to this 14 * See file CREDITS for list of people who contributed to this
15 * project. 15 * project.
16 * 16 *
17 * This program is free software; you can redistribute it and/or 17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as 18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of 19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version. 20 * the License, or (at your option) any later version.
21 * 21 *
22 * This program is distributed in the hope that it will be useful, 22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details. 25 * GNU General Public License for more details.
26 * 26 *
27 * You should have received a copy of the GNU General Public License 27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software 28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 * MA 02111-1307 USA 30 * MA 02111-1307 USA
31 */ 31 */
32 #include <common.h> 32 #include <common.h>
33 #include <twl4030.h> 33 #include <twl4030.h>
34 #include <asm/io.h> 34 #include <asm/io.h>
35 #include <asm/arch/mux.h> 35 #include <asm/arch/mux.h>
36 #include <asm/arch/sys_proto.h> 36 #include <asm/arch/sys_proto.h>
37 #include <asm/mach-types.h> 37 #include <asm/mach-types.h>
38 #include "pandora.h" 38 #include "pandora.h"
39 39
40 #define TWL4030_BB_CFG_BBCHEN (1 << 4)
41 #define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2)
42 #define TWL4030_BB_CFG_BBISEL_500UA 2
43
40 /* 44 /*
41 * Routine: board_init 45 * Routine: board_init
42 * Description: Early hardware init. 46 * Description: Early hardware init.
43 */ 47 */
44 int board_init(void) 48 int board_init(void)
45 { 49 {
46 DECLARE_GLOBAL_DATA_PTR; 50 DECLARE_GLOBAL_DATA_PTR;
47 51
48 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 52 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
49 /* board id for Linux */ 53 /* board id for Linux */
50 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA; 54 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA;
51 /* boot param addr */ 55 /* boot param addr */
52 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 56 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
53 57
54 return 0; 58 return 0;
55 } 59 }
56 60
57 /* 61 /*
58 * Routine: misc_init_r 62 * Routine: misc_init_r
59 * Description: Configure board specific parts 63 * Description: Configure board specific parts
60 */ 64 */
61 int misc_init_r(void) 65 int misc_init_r(void)
62 { 66 {
63 struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE; 67 struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE;
64 struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE; 68 struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE;
65 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; 69 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
66 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; 70 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
67 71
68 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON); 72 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
69 73
70 /* Configure GPIOs to output */ 74 /* Configure GPIOs to output */
71 writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe); 75 writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe);
72 writel(~GPIO22, &gpio4_base->oe); /* 118 */ 76 writel(~GPIO22, &gpio4_base->oe); /* 118 */
73 writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31), 77 writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31),
74 &gpio5_base->oe); /* 128, 129, 156-159 */ 78 &gpio5_base->oe); /* 128, 129, 156-159 */
75 writel(~GPIO4, &gpio6_base->oe); /* 164 */ 79 writel(~GPIO4, &gpio6_base->oe); /* 164 */
76 80
77 /* Set GPIOs */ 81 /* Set GPIOs */
78 writel(GPIO28, &gpio5_base->setdataout); 82 writel(GPIO28, &gpio5_base->setdataout);
79 writel(GPIO4, &gpio6_base->setdataout); 83 writel(GPIO4, &gpio6_base->setdataout);
84
85 /* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
86 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
87 TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
88 TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG);
80 89
81 dieid_num_r(); 90 dieid_num_r();
82 91
83 return 0; 92 return 0;
84 } 93 }
85 94
86 /* 95 /*
87 * Routine: set_muxconf_regs 96 * Routine: set_muxconf_regs
88 * Description: Setting up the configuration Mux registers specific to the 97 * Description: Setting up the configuration Mux registers specific to the
89 * hardware. Many pins need to be moved from protect to primary 98 * hardware. Many pins need to be moved from protect to primary
90 * mode. 99 * mode.
91 */ 100 */
92 void set_muxconf_regs(void) 101 void set_muxconf_regs(void)
93 { 102 {
94 MUX_PANDORA(); 103 MUX_PANDORA();
95 } 104 }
96 105