diff options
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/sys_info.c')
-rw-r--r-- | arch/arm/cpu/armv7/am33xx/sys_info.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/sys_info.c b/arch/arm/cpu/armv7/am33xx/sys_info.c deleted file mode 100644 index f0f72fa..0000000 --- a/arch/arm/cpu/armv7/am33xx/sys_info.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * sys_info.c - * - * System information functions - * - * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ - * - * Derived from Beagle Board and 3430 SDP code by - * Richard Woodruff <r-woodruff2@ti.com> - * Syed Mohammed Khasim <khasim@ti.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/sys_proto.h> -#include <asm/arch/cpu.h> -#include <asm/arch/clock.h> -#include <power/tps65910.h> -#include <linux/compiler.h> - -struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE; - -/** - * get_cpu_rev(void) - extract rev info - */ -u32 get_cpu_rev(void) -{ - u32 id; - u32 rev; - - id = readl(DEVICE_ID); - rev = (id >> 28) & 0xff; - - return rev; -} - -/** - * get_cpu_type(void) - extract cpu info - */ -u32 get_cpu_type(void) -{ - u32 id = 0; - u32 partnum; - - id = readl(DEVICE_ID); - partnum = (id >> 12) & 0xffff; - - return partnum; -} - -/** - * get_device_type(): tell if GP/HS/EMU/TST - */ -u32 get_device_type(void) -{ - int mode; - mode = readl(&cstat->statusreg) & (DEVICE_MASK); - return mode >>= 8; -} - -/** - * get_sysboot_value(void) - return SYS_BOOT[4:0] - */ -u32 get_sysboot_value(void) -{ - return readl(&cstat->statusreg) & SYSBOOT_MASK; -} - -#ifdef CONFIG_DISPLAY_CPUINFO -static char *cpu_revs[] = { - "1.0", - "2.0", - "2.1"}; - - -static char *dev_types[] = { - "TST", - "EMU", - "HS", - "GP"}; - -/** - * Print CPU information - */ -int print_cpuinfo(void) -{ - char *cpu_s, *sec_s, *rev_s; - - switch (get_cpu_type()) { - case AM335X: - cpu_s = "AM335X"; - break; - case TI81XX: - cpu_s = "TI81XX"; - break; - case AM437X: - cpu_s = "AM437X"; - break; - default: - cpu_s = "Unknown CPU type"; - break; - } - - if (get_cpu_rev() < ARRAY_SIZE(cpu_revs)) - rev_s = cpu_revs[get_cpu_rev()]; - else - rev_s = "?"; - - if (get_device_type() < ARRAY_SIZE(dev_types)) - sec_s = dev_types[get_device_type()]; - else - sec_s = "?"; - - printf("CPU : %s-%s rev %s\n", cpu_s, sec_s, rev_s); - - return 0; -} -#endif /* CONFIG_DISPLAY_CPUINFO */ - -#ifdef CONFIG_AM33XX -int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev) -{ - int sil_rev; - - sil_rev = readl(&cdev->deviceid) >> 28; - - if (sil_rev == 1) - /* PG 2.0, efuse may not be set. */ - return MPUPLL_M_800; - else if (sil_rev >= 2) { - /* Check what the efuse says our max speed is. */ - int efuse_arm_mpu_max_freq; - efuse_arm_mpu_max_freq = readl(&cdev->efuse_sma); - switch ((efuse_arm_mpu_max_freq & DEVICE_ID_MASK)) { - case AM335X_ZCZ_1000: - return MPUPLL_M_1000; - case AM335X_ZCZ_800: - return MPUPLL_M_800; - case AM335X_ZCZ_720: - return MPUPLL_M_720; - case AM335X_ZCZ_600: - case AM335X_ZCE_600: - return MPUPLL_M_600; - case AM335X_ZCZ_300: - case AM335X_ZCE_300: - return MPUPLL_M_300; - } - } - - /* PG 1.0 or otherwise unknown, use the PG1.0 max */ - return MPUPLL_M_720; -} - -int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency) -{ - /* For PG2.1 and later, we have one set of values. */ - if (sil_rev >= 2) { - switch (frequency) { - case MPUPLL_M_1000: - return TPS65910_OP_REG_SEL_1_3_2_5; - case MPUPLL_M_800: - return TPS65910_OP_REG_SEL_1_2_6; - case MPUPLL_M_720: - return TPS65910_OP_REG_SEL_1_2_0; - case MPUPLL_M_600: - case MPUPLL_M_300: - return TPS65910_OP_REG_SEL_1_1_3; - } - } - - /* Default to PG1.0/PG2.0 values. */ - return TPS65910_OP_REG_SEL_1_1_3; -} -#endif |