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Linux Kernel
3.7.1
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Linux Kernel
3.7.1
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#include <linux/kernel.h>#include <linux/types.h>#include <linux/errno.h>#include <linux/err.h>#include <linux/io.h>#include <plat/common.h>#include "common.h"#include "prm33xx.h"#include "prm-regbits-33xx.h"Go to the source code of this file.
Functions | |
| u32 | am33xx_prm_read_reg (s16 inst, u16 idx) |
| void | am33xx_prm_write_reg (u32 val, s16 inst, u16 idx) |
| u32 | am33xx_prm_rmw_reg_bits (u32 mask, u32 bits, s16 inst, s16 idx) |
| int | am33xx_prm_is_hardreset_asserted (u8 shift, s16 inst, u16 rstctrl_offs) |
| int | am33xx_prm_assert_hardreset (u8 shift, s16 inst, u16 rstctrl_offs) |
| int | am33xx_prm_deassert_hardreset (u8 shift, s16 inst, u16 rstctrl_offs, u16 rstst_offs) |
am33xx_prm_assert_hardreset - assert the HW reset line of a submodule : register bit shift corresponding to the reset line to assert : CM instance register offset (*_INST macro) : RM_RSTCTRL register address for this module
Some IPs like dsp, ipu or iva contain processors that require an HW reset line to be asserted / deasserted in order to fully enable the IP. These modules may have multiple hard-reset lines that reset different 'submodules' inside the IP block. This function will place the submodule into reset. Returns 0 upon success or -EINVAL upon an argument error.
am33xx_prm_deassert_hardreset - deassert a submodule hardreset line and wait : register bit shift corresponding to the reset line to deassert : CM instance register offset (*_INST macro) : RM_RSTCTRL register address for this module : RM_RSTST register address for this module
Some IPs like dsp, ipu or iva contain processors that require an HW reset line to be asserted / deasserted in order to fully enable the IP. These modules may have multiple hard-reset lines that reset different 'submodules' inside the IP block. This function will take the submodule out of reset and wait until the PRCM indicates that the reset has completed before returning. Returns 0 upon success or -EINVAL upon an argument error, -EEXIST if the submodule was already out of reset, or -EBUSY if the submodule did not exit reset promptly.
am33xx_prm_is_hardreset_asserted - read the HW reset line state of submodules contained in the hwmod module : register bit shift corresponding to the reset line to check : CM instance register offset (*_INST macro) : RM_RSTCTRL register address offset for this module
Returns 1 if the (sub)module hardreset line is currently asserted, 0 if the (sub)module hardreset line is not currently asserted, or -EINVAL upon parameter error.
1.8.2