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i.MX SoC changes for 4.15: 

- A series from Marco Franchi from to clean up build warnings see with
    W=1 in arch/arm/mach-imx/.
  - Move i.MX6 speed grading check from i.MX platform code to cpufreq
    driver.  The patch is suggested by cpufreq folks to go through
    arm-soc tree.
  - Enable cpuidle support on i.MX6DL starting from IMX_CHIP_REVISION_1_1.
  - Constify platform_suspend_ops for MXS platform.
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Merge tag 'imx-soc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc

Pull "i.MX SoC changes for 4.15" from Shawn Guo:

 - A series from Marco Franchi from to clean up build warnings see with
   W=1 in arch/arm/mach-imx/.
 - Move i.MX6 speed grading check from i.MX platform code to cpufreq
   driver.  The patch is suggested by cpufreq folks to go through
   arm-soc tree.
 - Enable cpuidle support on i.MX6DL starting from IMX_CHIP_REVISION_1_1.
 - Constify platform_suspend_ops for MXS platform.

* tag 'imx-soc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  cpufreq: imx6q: Move speed grading check to cpufreq driver
  ARM: imx: Enable cpuidle for i.MX6DL starting at 1.1
  ARM: imx: mach-mx31lite: Make mx31lite_map_io static
  ARM: imx: cpuidle-imx5: Include "cpuidle.h" header file
  ARM: imx: 3ds-debugboard: Include "3ds_debugboard.h" header file
  ARM: imx: imx31moboard: Include "board-mx31moboard.h" header file
  ARM: mxs: constify platform_suspend_ops
hifive-unleashed-5.1
Arnd Bergmann 2017-10-30 11:21:18 +01:00
parent 457e3b10fb 8e2b04b019
commit 16511ee20b
8 changed files with 79 additions and 112 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-imx/3ds_debugboard.c
View File

@ -20,7 +20,7 @@
#include <linux/smsc911x.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include "3ds_debugboard.h"
#include "hardware.h"
/* LAN9217 ethernet base address */

1
arch/arm/mach-imx/cpuidle-imx5.c
View File

@ -9,6 +9,7 @@
#include <linux/cpuidle.h>
#include <linux/module.h>
#include <asm/system_misc.h>
#include "cpuidle.h"
static int imx5_cpuidle_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)

97
arch/arm/mach-imx/mach-imx6q.c
View File

@ -286,101 +286,20 @@ static void __init imx6q_init_machine(void)
imx6q_axi_init();
}
#define OCOTP_CFG3 0x440
#define OCOTP_CFG3_SPEED_SHIFT 16
#define OCOTP_CFG3_SPEED_1P2GHZ 0x3
#define OCOTP_CFG3_SPEED_996MHZ 0x2
#define OCOTP_CFG3_SPEED_852MHZ 0x1
static void __init imx6q_opp_check_speed_grading(struct device *cpu_dev)
{
struct device_node *np;
void __iomem *base;
u32 val;
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-ocotp");
if (!np) {
pr_warn("failed to find ocotp node\n");
return;
}
base = of_iomap(np, 0);
if (!base) {
pr_warn("failed to map ocotp\n");
goto put_node;
}
/*
* SPEED_GRADING[1:0] defines the max speed of ARM:
* 2b'11: 1200000000Hz;
* 2b'10: 996000000Hz;
* 2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz.
* 2b'00: 792000000Hz;
* We need to set the max speed of ARM according to fuse map.
*/
val = readl_relaxed(base + OCOTP_CFG3);
val >>= OCOTP_CFG3_SPEED_SHIFT;
val &= 0x3;
if ((val != OCOTP_CFG3_SPEED_1P2GHZ) && cpu_is_imx6q())
if (dev_pm_opp_disable(cpu_dev, 1200000000))
pr_warn("failed to disable 1.2 GHz OPP\n");
if (val < OCOTP_CFG3_SPEED_996MHZ)
if (dev_pm_opp_disable(cpu_dev, 996000000))
pr_warn("failed to disable 996 MHz OPP\n");
if (cpu_is_imx6q()) {
if (val != OCOTP_CFG3_SPEED_852MHZ)
if (dev_pm_opp_disable(cpu_dev, 852000000))
pr_warn("failed to disable 852 MHz OPP\n");
}
iounmap(base);
put_node:
of_node_put(np);
}
static void __init imx6q_opp_init(void)
{
struct device_node *np;
struct device *cpu_dev = get_cpu_device(0);
if (!cpu_dev) {
pr_warn("failed to get cpu0 device\n");
return;
}
np = of_node_get(cpu_dev->of_node);
if (!np) {
pr_warn("failed to find cpu0 node\n");
return;
}
if (dev_pm_opp_of_add_table(cpu_dev)) {
pr_warn("failed to init OPP table\n");
goto put_node;
}
imx6q_opp_check_speed_grading(cpu_dev);
put_node:
of_node_put(np);
}
static struct platform_device imx6q_cpufreq_pdev = {
.name = "imx6q-cpufreq",
};
static void __init imx6q_init_late(void)
{
/*
* WAIT mode is broken on TO 1.0 and 1.1, so there is no point
* to run cpuidle on them.
* WAIT mode is broken on imx6 Dual/Quad revision 1.0 and 1.1 so
* there is no point to run cpuidle on them.
*
* It does work on imx6 Solo/DualLite starting from 1.1
*/
if (imx_get_soc_revision() > IMX_CHIP_REVISION_1_1)
if ((cpu_is_imx6q() && imx_get_soc_revision() > IMX_CHIP_REVISION_1_1) ||
(cpu_is_imx6dl() && imx_get_soc_revision() > IMX_CHIP_REVISION_1_0))
imx6q_cpuidle_init();
if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) {
imx6q_opp_init();
platform_device_register(&imx6q_cpufreq_pdev);
}
if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
}
static void __init imx6q_map_io(void)

2
arch/arm/mach-imx/mach-mx31lite.c
View File

@ -245,7 +245,7 @@ static struct map_desc mx31lite_io_desc[] __initdata = {
/*
* Set up static virtual mappings.
*/
void __init mx31lite_map_io(void)
static void __init mx31lite_map_io(void)
{
mx31_map_io();
iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));

1
arch/arm/mach-imx/mx31moboard-devboard.c
View File

@ -22,6 +22,7 @@
#include <linux/usb/otg.h>
#include "board-mx31moboard.h"
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"

1
arch/arm/mach-imx/mx31moboard-marxbot.c
View File

@ -24,6 +24,7 @@
#include <linux/usb/otg.h>
#include "board-mx31moboard.h"
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"

2
arch/arm/mach-mxs/pm.c
View File

@ -30,7 +30,7 @@ static int mxs_suspend_enter(suspend_state_t state)
return 0;
}
static struct platform_suspend_ops mxs_suspend_ops = {
static const struct platform_suspend_ops mxs_suspend_ops = {
.enter = mxs_suspend_enter,
.valid = suspend_valid_only_mem,
};

85
drivers/cpufreq/imx6q-cpufreq.c
View File

@ -12,6 +12,7 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
@ -191,6 +192,57 @@ static struct cpufreq_driver imx6q_cpufreq_driver = {
.suspend = cpufreq_generic_suspend,
};
#define OCOTP_CFG3 0x440
#define OCOTP_CFG3_SPEED_SHIFT 16
#define OCOTP_CFG3_SPEED_1P2GHZ 0x3
#define OCOTP_CFG3_SPEED_996MHZ 0x2
#define OCOTP_CFG3_SPEED_852MHZ 0x1
static void imx6q_opp_check_speed_grading(struct device *dev)
{
struct device_node *np;
void __iomem *base;
u32 val;
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-ocotp");
if (!np)
return;
base = of_iomap(np, 0);
if (!base) {
dev_err(dev, "failed to map ocotp\n");
goto put_node;
}
/*
* SPEED_GRADING[1:0] defines the max speed of ARM:
* 2b'11: 1200000000Hz;
* 2b'10: 996000000Hz;
* 2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz.
* 2b'00: 792000000Hz;
* We need to set the max speed of ARM according to fuse map.
*/
val = readl_relaxed(base + OCOTP_CFG3);
val >>= OCOTP_CFG3_SPEED_SHIFT;
val &= 0x3;
if ((val != OCOTP_CFG3_SPEED_1P2GHZ) &&
of_machine_is_compatible("fsl,imx6q"))
if (dev_pm_opp_disable(dev, 1200000000))
dev_warn(dev, "failed to disable 1.2GHz OPP\n");
if (val < OCOTP_CFG3_SPEED_996MHZ)
if (dev_pm_opp_disable(dev, 996000000))
dev_warn(dev, "failed to disable 996MHz OPP\n");
if (of_machine_is_compatible("fsl,imx6q")) {
if (val != OCOTP_CFG3_SPEED_852MHZ)
if (dev_pm_opp_disable(dev, 852000000))
dev_warn(dev, "failed to disable 852MHz OPP\n");
}
iounmap(base);
put_node:
of_node_put(np);
}
static int imx6q_cpufreq_probe(struct platform_device *pdev)
{
struct device_node *np;
@ -252,28 +304,21 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
goto put_reg;
}
/*
* We expect an OPP table supplied by platform.
* Just, incase the platform did not supply the OPP
* table, it will try to get it.
*/
ret = dev_pm_opp_of_add_table(cpu_dev);
if (ret < 0) {
dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);
goto put_reg;
}
imx6q_opp_check_speed_grading(cpu_dev);
/* Because we have added the OPPs here, we must free them */
free_opp = true;
num = dev_pm_opp_get_opp_count(cpu_dev);
if (num < 0) {
ret = dev_pm_opp_of_add_table(cpu_dev);
if (ret < 0) {
dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);
goto put_reg;
}
/* Because we have added the OPPs here, we must free them */
free_opp = true;
num = dev_pm_opp_get_opp_count(cpu_dev);
if (num < 0) {
ret = num;
dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
goto out_free_opp;
}
ret = num;
dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
goto out_free_opp;
}
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);