Commit 03c22449 authored by Zhuoyu Zhang's avatar Zhuoyu Zhang Committed by York Sun

arm/ls102xa:add hwconfig setting to support disable unused devices

DEVDISRn registers provides a mechanism for gating clocks of IP blocks
that are not used. Here we implement hwconfig option to allow users
to disable unused peripherals on the board.

For ex. If eSDHC/qDMA/eDMA are unused and with disabled status in dts,
User can enable CONFIG_FSL_DEVICE_DISABLE and set "devdis:esdhc,qdma,edma"
in hwconfig, thus ESDHC controller & eDMA/qDMA will be clock gated to
save more power.
Signed-off-by: default avatarZhuoyu Zhang <Zhuoyu.Zhang@freescale.com>
Reviewed-by: default avatarYork Sun <yorksun@freescale.com>
parent ec93af0d
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FSL_LS102XA_DEVDIS_H_
#define __FSL_LS102XA_DEVDIS_H_
#include <fsl_devdis.h>
const struct devdis_table devdis_tbl[] = {
{ "pbl", 0x0, 0x80000000 }, /* PBL */
{ "esdhc", 0x0, 0x20000000 }, /* eSDHC */
{ "qdma", 0x0, 0x800000 }, /* qDMA */
{ "edma", 0x0, 0x400000 }, /* eDMA */
{ "usb3", 0x0, 0x84000 }, /* USB3.0 controller and PHY*/
{ "usb2", 0x0, 0x40000 }, /* USB2.0 controller */
{ "sata", 0x0, 0x8000 }, /* SATA */
{ "sec", 0x0, 0x200 }, /* SEC */
{ "dcu", 0x0, 0x2 }, /* Display controller Unit */
{ "qe", 0x0, 0x1 }, /* QUICC Engine */
{ "etsec1", 0x1, 0x80000000 }, /* eTSEC1 controller */
{ "etesc2", 0x1, 0x40000000 }, /* eTSEC2 controller */
{ "etsec3", 0x1, 0x20000000 }, /* eTSEC3 controller */
{ "pex1", 0x2, 0x80000000 }, /* PCIE controller 1 */
{ "pex2", 0x2, 0x40000000 }, /* PCIE controller 2 */
{ "duart1", 0x3, 0x20000000 }, /* DUART1 */
{ "duart2", 0x3, 0x10000000 }, /* DUART2 */
{ "qspi", 0x3, 0x8000000 }, /* QSPI */
{ "ddr", 0x4, 0x80000000 }, /* DDR */
{ "ocram1", 0x4, 0x8000000 }, /* OCRAM1 */
{ "ifc", 0x4, 0x800000 }, /* IFC */
{ "gpio", 0x4, 0x400000 }, /* GPIO */
{ "dbg", 0x4, 0x200000 }, /* DBG */
{ "can1", 0x4, 0x80000 }, /* FlexCAN1 */
{ "can2_4", 0x4, 0x40000 }, /* FlexCAN2_3_4 */
{ "ftm2_8", 0x4, 0x20000 }, /* FlexTimer2_3_4_5_6_7_8 */
{ "secmon", 0x4, 0x4000 }, /* Security Monitor */
{ "wdog1_2", 0x4, 0x400 }, /* WatchDog1_2 */
{ "i2c2_3", 0x4, 0x200 }, /* I2C2_3 */
{ "sai1_4", 0x4, 0x100 }, /* SAI1_2_3_4 */
{ "lpuart2_6", 0x4, 0x80 }, /* LPUART2_3_4_5_6 */
{ "dspi1_2", 0x4, 0x40 }, /* DSPI1_2 */
{ "asrc", 0x4, 0x20 }, /* ASRC */
{ "spdif", 0x4, 0x10 }, /* SPDIF */
{ "i2c1", 0x4, 0x4 }, /* I2C1 */
{ "lpuart1", 0x4, 0x2 }, /* LPUART1 */
{ "ftm1", 0x4, 0x1 }, /* FlexTimer1 */
};
#endif
......@@ -12,12 +12,14 @@
#include <asm/arch/clock.h>
#include <asm/arch/fsl_serdes.h>
#include <asm/arch/ls102xa_stream_id.h>
#include <asm/arch/ls102xa_devdis.h>
#include <hwconfig.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <fsl_ifc.h>
#include <fsl_sec.h>
#include <spl.h>
#include <fsl_devdis.h>
#include "../common/sleep.h"
#include "../common/qixis.h"
......@@ -531,6 +533,9 @@ int misc_init_r(void)
else if (hwconfig("sdhc"))
config_board_mux(MUX_TYPE_SDHC);
#ifdef CONFIG_FSL_DEVICE_DISABLE
device_disable(devdis_tbl, ARRAY_SIZE(devdis_tbl));
#endif
#ifdef CONFIG_FSL_CAAM
return sec_init();
#endif
......
......@@ -12,6 +12,7 @@
#include <asm/arch/clock.h>
#include <asm/arch/fsl_serdes.h>
#include <asm/arch/ls102xa_stream_id.h>
#include <asm/arch/ls102xa_devdis.h>
#include <hwconfig.h>
#include <mmc.h>
#include <fsl_esdhc.h>
......@@ -21,6 +22,7 @@
#include <fsl_mdio.h>
#include <tsec.h>
#include <fsl_sec.h>
#include <fsl_devdis.h>
#include <spl.h>
#include "../common/sleep.h"
#ifdef CONFIG_U_QE
......@@ -652,6 +654,9 @@ int board_init(void)
#if defined(CONFIG_MISC_INIT_R)
int misc_init_r(void)
{
#ifdef CONFIG_FSL_DEVICE_DISABLE
device_disable(devdis_tbl, ARRAY_SIZE(devdis_tbl));
#endif
#ifndef CONFIG_QSPI_BOOT
config_board_mux();
#endif
......
......@@ -35,3 +35,4 @@ obj-$(CONFIG_FSL_IFC) += fsl_ifc.o
obj-$(CONFIG_FSL_SEC_MON) += fsl_sec_mon.o
obj-$(CONFIG_PCA9551_LED) += pca9551_led.o
obj-$(CONFIG_RESET) += reset-uclass.o
obj-$(CONFIG_FSL_DEVICE_DISABLE) += fsl_devdis.o
/*
* Copyright 2015 Freescale Semiconductor, Inc.
* Author: Zhuoyu Zhang <Zhuoyu.Zhang@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch-ls102xa/immap_ls102xa.h>
#include <asm/arch-ls102xa/config.h>
#include <linux/compiler.h>
#include <hwconfig.h>
#include <fsl_devdis.h>
void device_disable(const struct devdis_table *tbl, uint32_t num)
{
int i;
struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
/*
* Extract hwconfig from environment and disable unused device.
*/
for (i = 0; i < num; i++) {
if (hwconfig_sub("devdis", tbl[i].name))
setbits_be32(&gur->devdisr + tbl[i].offset,
tbl[i].mask);
}
}
......@@ -566,7 +566,9 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_TIMER_CLK_FREQ 12500000
#define CONFIG_HWCONFIG
#define HWCONFIG_BUFFER_SIZE 128
#define HWCONFIG_BUFFER_SIZE 256
#define CONFIG_FSL_DEVICE_DISABLE
#define CONFIG_BOOTDELAY 3
......
......@@ -414,7 +414,9 @@
#define CONFIG_TIMER_CLK_FREQ 12500000
#define CONFIG_HWCONFIG
#define HWCONFIG_BUFFER_SIZE 128
#define HWCONFIG_BUFFER_SIZE 256
#define CONFIG_FSL_DEVICE_DISABLE
#define CONFIG_BOOTDELAY 3
......
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FSL_DEVDIS_H_
#define __FSL_DEVDIS_H_
struct devdis_table {
char name[32];
u32 offset;
u32 mask;
};
void device_disable(const struct devdis_table *tbl, uint32_t num);
#endif
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment