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arch/arm64/imx9: Add system reset controller

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System reset controller to powercycle ml and media blocks
and disable power-isolation

Signed-off-by: Jouni Ukkonen <jouni.ukkonen@unikie.com>
This commit is contained in:
Jouni Ukkonen 2024-08-19 12:24:59 +03:00 committed by Xiang Xiao
parent 101c2f0421
commit ac319ba49a
4 changed files with 242 additions and 0 deletions
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4
arch/arm64/src/imx9/Make.defs
View file

@ -75,3 +75,7 @@ endif
ifeq ($(CONFIG_IMX9_FLEXSPI_NOR), y)
CHIP_CSRCS += imx9_flexspi_nor.c
endif
ifeq ($(CONFIG_IMX9_BOOTLOADER), y)
CHIP_CSRCS += imx9_system_ctl.c
endif

4
arch/arm64/src/imx9/imx9_boot.c
View file

@ -43,6 +43,7 @@
#include "imx9_serial.h"
#include "imx9_gpio.h"
#include "imx9_lowputc.h"
#include "imx9_system_ctl.h"
/****************************************************************************
* Private Data
@ -109,6 +110,9 @@ void arm64_el_init(void)
void arm64_chip_boot(void)
{
#ifdef CONFIG_IMX9_BOOTLOADER
imx9_mix_powerup();
#endif
/* MAP IO and DRAM, enable MMU. */
arm64_mmu_init(true);

146
arch/arm64/src/imx9/imx9_system_ctl.c Normal file
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@ -0,0 +1,146 @@
/****************************************************************************
* arch/arm64/src/imx9/imx9_system_ctl.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/cache.h>
#ifdef CONFIG_PAGING
# include <nuttx/page.h>
#endif
#include <arch/chip/chip.h>
#include "imx9_system_ctl.h"
/****************************************************************************
* Public Functions
****************************************************************************/
void imx9_mix_powerup(void)
{
uint32_t val = 0;
/* Authen ctrl, enable NS access to slice registers */
modifyreg32(IMX9_SRC_MEDIA_SLICE_BASE +
SRC_SLICE_AUTHEN_CTRL_OFFSET, 0, BIT(9));
modifyreg32(IMX9_SRC_ML_SLICE_BASE +
SRC_SLICE_AUTHEN_CTRL_OFFSET, 0, BIT(9));
/* Enable s400 handsake */
modifyreg32(IMX9_BLK_CTRL_S_AONMIX2_BASE +
AON_MIX_LP_HANDSAKE, 0, BIT(13));
/* Counter mode */
modifyreg32(IMX9_SRC_MEDIA_SLICE_BASE +
SRC_SLICE_PSW_ACK_CTRL0_OFFSET, BIT(28), BIT(29));
modifyreg32(IMX9_SRC_ML_SLICE_BASE +
SRC_SLICE_PSW_ACK_CTRL0_OFFSET, BIT(28), BIT(29));
/* release media and ml from reset */
modifyreg32(IMX9_SRC_GENERAL_REG_BASE +
SRC_CTRL_OFFSET, 0, (BIT(4) | BIT(5)));
/* Enable mem in Low power auto sequence */
modifyreg32(IMX9_SRC_MEDIA_MEM_BASE + MEM_CTRL_OFFSET, 0, BIT(2));
modifyreg32(IMX9_SRC_ML_MEM_BASE + MEM_CTRL_OFFSET, 0, BIT(2));
/* Mediamix powerdown */
modifyreg32(IMX9_SRC_MEDIA_SLICE_BASE + SRC_SLICE_SW_CTRL_OFFSET,
0, BIT(31));
val = getreg32(IMX9_SRC_MEDIA_SLICE_BASE + SRC_SLICE_FUNC_STAT_OFFSET);
if (val & 1)
{
while (!(val & BIT(12)))
{
val = getreg32(IMX9_SRC_MEDIA_SLICE_BASE +
SRC_SLICE_FUNC_STAT_OFFSET);
}
up_udelay(1);
}
else
{
while (!(val & BIT(0)))
{
val = getreg32(IMX9_SRC_MEDIA_SLICE_BASE +
SRC_SLICE_FUNC_STAT_OFFSET);
}
}
/* Power on */
modifyreg32(IMX9_SRC_MEDIA_SLICE_BASE +
SRC_SLICE_SW_CTRL_OFFSET, BIT(31), 0);
while (!(val & BIT(4)))
{
val = getreg32(IMX9_SRC_MEDIA_SLICE_BASE + SRC_SLICE_FUNC_STAT_OFFSET);
}
/* ML powerdown */
modifyreg32(IMX9_SRC_ML_SLICE_BASE + SRC_SLICE_SW_CTRL_OFFSET, 0, BIT(31));
val = getreg32(IMX9_SRC_ML_SLICE_BASE + SRC_SLICE_FUNC_STAT_OFFSET);
if (val & 1)
{
while (!(val & BIT(12)))
{
val = getreg32(IMX9_SRC_ML_SLICE_BASE +
SRC_SLICE_FUNC_STAT_OFFSET);
}
up_udelay(1);
}
else
{
while (!(val & BIT(0)))
{
val = getreg32(IMX9_SRC_ML_SLICE_BASE +
SRC_SLICE_FUNC_STAT_OFFSET);
}
}
/* Power on */
modifyreg32(IMX9_SRC_ML_SLICE_BASE + SRC_SLICE_SW_CTRL_OFFSET, BIT(31), 0);
while (!(val & BIT(4)))
{
val = getreg32(IMX9_SRC_ML_SLICE_BASE + SRC_SLICE_FUNC_STAT_OFFSET);
}
/* Disable isolation usb, dsi, csi */
putreg32(0, IMX9_SRC_GENERAL_REG_BASE + SRC_SP_ISO_CTRL_OFFSET);
}

88
arch/arm64/src/imx9/imx9_system_ctl.h Normal file
View file

@ -0,0 +1,88 @@
/****************************************************************************
* arch/arm64/src/imx9/imx9_system_ctl.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM64_SRC_IMX9_IMX9_SYSTEM_CTL_H
#define __ARCH_ARM64_SRC_IMX9_IMX9_SYSTEM_CTL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <arch/board/board.h>
#include "arm64_internal.h"
#include "hardware/imx9_memorymap.h"
#define SRC_CTRL_OFFSET 0x10
#define SRC_SP_ISO_CTRL_OFFSET 0x10C
#define MEM_CTRL_OFFSET 0x4
#define SRC_SLICE_SW_CTRL_OFFSET 0x20
#define SRC_SLICE_FUNC_STAT_OFFSET 0xb4
#define SRC_SLICE_AUTHEN_CTRL_OFFSET 0x4
#define SRC_SLICE_PSW_ACK_CTRL0_OFFSET 0x80
#define SYS_CTR_CNTFID0 0x20
#define SYS_CTR_CNTCR 0x0
#define SC_CNTCR_ENABLE 0x1
#define SC_CNTCR_HDBG 0x2
#define SC_CNTCR_FREQ0 0x100
#define SC_CNTCR_FREQ1 0x200
#define AON_MIX_LP_HANDSAKE 0x110
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Name: imx9_mix_powerup
*
* Description:
* Powercycle ML and media mix and disable isolation
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
****************************************************************************/
void imx9_mix_powerup(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif
#endif /* __ARCH_ARM64_SRC_IMX9_IMX9_SYSTEM_CTL_H */