Ok335xs u-boot GPIO Control hacking

/**************************************************************************************** * OK 335xS u-boot Gpio Control hacking * Declaration: * This article is mainly to track how to set the GPIO port level in U-boot. * 2015-9-26 Sunny Shenzhen Nanshan Ping Shan village Zengjianfeng ******************************************** *******************************************/Cat Board/forlinx/ok335x/EVM.CintBoard_init (void)                                                                                { intc = -; /*Configure the i2c0 pin MUX*/Enable_i2c0_pin_mux ();                                                                                                                                                   I2c_init (Config_sys_i2c_speed, Config_sys_i2c_slave); board_id=Gp_board; profile=1;/*Profile 0 is internally considered as 1*/daughter_board_connected=1; Configure_evm_pin_mux (board_id, header.version, profile, Daughter_b oard_connected); --+                                                                                                   |/**                                                                                   | * 1.      References: |      * am335x ARM Cortex-a8 microprocessors (mpus) Technical Reference Manual (Rev. H) |      *                                                                                   | * 2.      ARM cortex-a8 Memory Map | * Table 2-2.      L4_wkup Peripheral Memory Map (continued) |               * +-------------+---------------------+-------------------+------+----------------+ | * | Region Name | Start Address (hex) | End Address (hex) | Size |               Description | |               * +-------------+---------------------+-------------------+------+----------------+ | * | GPIO0 | 0x44e0_7000 | 0X44E0_7FFF | 4KB |               GPIO Registers | | * +-------------+---------------------+-------------------+------+----------------+ |               *                                                                                   | * 3.      GPIO registers (4068 pages) | * Table 25-5.      GPIO Registers |               * +--------+-------------------+---------------+-------------------+                | * | Offset | Acronym | Register Name |                Section |               |               * +--------+-------------------+---------------+-------------------+                | * | 134h |               Gpio_oe | |               Section 25.4.1.16 |<-+ |             * +--------+-------------------+---------------+-------------------+  |               | * | 190h |               Gpio_cleardataout | |  Section 25.4.1.25 |               |<-+ | * +--------+-------------------+---------------+-------------------+  |          |               | * | 194h |               Gpio_setdataout | |  Section 25.4.1.26 |  |               |<-+ |  * +--------+-------------------+---------------+-------------------+  |  |       |                |*/|  |       | |/*set gpio0_7 Gpio0_12 gpio0_22 gpio0_23 output mode*/|  |       | |__raw_writel (~((1<<7) | (1<< A) | (1<< A) | (1<< at)),0x44e07134);-------+  |       | |/*Set Gpio0_7*/|       | |__raw_writel ((1<<7) | (1<< +) | (1<< at),0x44e07190);       ----------+  | |/*set gpio0_22 high to height*/| |__raw_writel ((1<< A) | (1<< A),0x44e07194);                                                                                                   -------------+       |                                                                                                   | |#ifndef Config_spl_build|Board_evm_init (); |#endif|Gpmc_init (); | |return 0; |         }               +-------------------------------------------------------------------------+VvoidConfigure_evm_pin_mux (unsignedCharDGHTR_BRD_ID,Charversion[4], unsigned ShortProfile , unsignedintDaughter_board_flag) {                                                                                                       if(dghtr_brd_id >Base_board)return; Set_evm_pin_mux (am335x_evm_pin_mux[0], Profile,daughter_board_flag); }                                 |V Static structEvm_pin_mux *am335x_evm_pin_mux[] ={General_purpose_evm_pin_mux,----------------------+                       }; | |/*                                                                          |                        * Update the structure with the modules present in the general purpose |                 * Board and the profiles in which the modules is present.                        |                        * If the module is physically present if it isn't available |                            * In any of the profiles, then does not update it.                        |                        * For EG, NAND was avialable only in the profiles 0 and 1, whereas |                                 * UART0 is available in all the profiles.                        | */|Static structEvm_pin_mux general_purpose_evm_pin_mux[] = {<----------+{i2c1_pin_mux, Profile_all& ~profile_2 & ~profile_4, Dev_on_baseboard},                                                                                      #ifdef Config_nand {Nand_pin_mux, Profile_all& ~profile_2 & ~profile_3, DEV_ON_DGHTR_BRD},#endif                                                                                              #ifndef Config_no_ ETH {mii1_pin_mux, Profile_all, Dev_on_b Aseboard},#endif                                                                                              #ifdef CONFIG_MMC {Mmc0_pin_mux, Profile_all, Dev_on_b Aseboard},#endif                                                                                              {backlight_pin_mux, Profile_all, Dev_on_baseboard},-----+{maxttl_model_pin_mux, Profile_all, Dev_on_baseboard},|{lcd_pin_mux, Profile_all, Dev_on_baseboard},|{uart0_pin_mux, Profile_all, Dev_on_baseboard},|                                {0},                                                               |                            }; | |Static structModule_pin_mux backlight_pin_mux[] = {<----+{OFFSET (ecap0_in_pwm0_out), MODE (7) | Pullup_en | Rxactive},/*gpio0_7*/{OFFSET (UART1_CTSN), MODE (7) | Pulluddis | Rxactive},/*gpio0_*/                        {-1},                                                                                           }; 

Ok335xs u-boot GPIO Control hacking