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x86: Probe pinctrl driver in cpu_init_r()

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At present pinctrl driver gets probed in ich6_gpio driver's probe
routine, which has two issues:

 - Pin's PADs only gets configured when GPIO driver is probed, which
   is not done by default. This leaves the board in a partially
   functional state as we must initialize PADs correctly to get
   perepherals fully working.
 - The probe routine of pinctrl driver is called multiple times, as
   normally there are multiple GPIO controllers. It should really
   be called just once.

Move the call to syscon_get_by_driver_data() from ich6_gpio driver
to cpu_init_r().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
This commit is contained in:
Bin Meng 2016-06-08 05:07:38 -07:00
parent 2f29c83eec
commit d8906c1f3f
2 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/cpu/cpu.c
View File

@ -24,6 +24,7 @@
#include <dm.h>
#include <errno.h>
#include <malloc.h>
#include <syscon.h>
#include <asm/control_regs.h>
#include <asm/coreboot_tables.h>
#include <asm/cpu.h>
@ -751,6 +752,10 @@ int cpu_init_r(void)
uclass_first_device(UCLASS_PCH, &dev);
uclass_first_device(UCLASS_LPC, &dev);
/* Set up pin control if available */
ret = syscon_get_by_driver_data(X86_SYSCON_PINCONF, &dev);
debug("%s, pinctrl=%p, ret=%d\n", __func__, dev, ret);
return 0;
}

7
drivers/gpio/intel_ich6_gpio.c
View File

@ -32,7 +32,6 @@
#include <fdtdec.h>
#include <pch.h>
#include <pci.h>
#include <syscon.h>
#include <asm/cpu.h>
#include <asm/gpio.h>
#include <asm/io.h>
@ -113,12 +112,6 @@ static int ich6_gpio_probe(struct udevice *dev)
struct ich6_bank_platdata *plat = dev_get_platdata(dev);
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
struct ich6_bank_priv *bank = dev_get_priv(dev);
struct udevice *pinctrl;
int ret;
/* Set up pin control if available */
ret = syscon_get_by_driver_data(X86_SYSCON_PINCONF, &pinctrl);
debug("%s, pinctrl=%p, ret=%d\n", __func__, pinctrl, ret);
uc_priv->gpio_count = GPIO_PER_BANK;
uc_priv->bank_name = plat->bank_name;