[PATCH 2/2] ARM: boards: remove obsolete PCA9450_RESET_CTRL setup

Ahmad Fatoum a.fatoum at pengutronix.de
Tue Mar 11 04:03:07 PDT 2025


Hi,

On 3/11/25 11:50, Jonas Rebmann wrote:
> Since a previous commit, PCA9450_RESET_CTRL is initialized to 0xA1 in
> pca9450_probe; explicitly setting this in board.c has no effect anymore.

Note that there is a number of i.MX8M boards that also use the PCA9450
and configure 0xA1 into PCA9450_RESET_CTRL in their lowlevel.c.

Any particular reason against or for dropping the configuration there?

Thanks,
Ahmad

> Signed-off-by: Jonas Rebmann <jre at pengutronix.de>
> ---
>  arch/arm/boards/phytec-phycore-imx93/board.c | 9 ---------
>  arch/arm/boards/tqma93xx/board.c             | 3 ---
>  2 files changed, 12 deletions(-)
> 
> diff --git a/arch/arm/boards/phytec-phycore-imx93/board.c b/arch/arm/boards/phytec-phycore-imx93/board.c
> index 149248ca654624826d0e8f6fe0f1f42c2747e248..03ba8cb5026d2a9eaa054fcfc69e18872fcd658e 100644
> --- a/arch/arm/boards/phytec-phycore-imx93/board.c
> +++ b/arch/arm/boards/phytec-phycore-imx93/board.c
> @@ -6,23 +6,14 @@
>  #include <init.h>
>  #include <linux/kernel.h>
>  #include <environment.h>
> -#include <mfd/pca9450.h>
>  #include <deep-probe.h>
>  #include <mach/imx/bbu.h>
>  #include <linux/pinctrl/consumer.h>
>  
> -static void phycore_imx93_init_pmic(struct regmap *map)
> -{
> -	/* set WDOG_B_CFG to cold reset */
> -	regmap_write(map, PCA9450_RESET_CTRL, 0xA1);
> -}
> -
>  static int phycore_imx93_probe(struct device *dev)
>  {
>  	struct device_node *np;
>  
> -	pca9450_register_init_callback(phycore_imx93_init_pmic);
> -
>  	/*
>  	 * The phy on the EQOS has its MDIO lines connected to the FEC. The phy
>  	 * registers can only be successfully read when the EQOS pinctrl setup
> diff --git a/arch/arm/boards/tqma93xx/board.c b/arch/arm/boards/tqma93xx/board.c
> index b181784079cf12e5a112d13f95c87c2cf5ebeba6..b4de6c2f6c347cb255537a3784a667a9c2607de3 100644
> --- a/arch/arm/boards/tqma93xx/board.c
> +++ b/arch/arm/boards/tqma93xx/board.c
> @@ -27,9 +27,6 @@ static void tqma93xx_init_pmic(struct regmap *map)
>  
>  	/* I2C_LT_EN*/
>  	regmap_write(map, 0xa, 0x3);
> -
> -	/* set WDOG_B_CFG to cold reset */
> -	regmap_write(map, PCA9450_RESET_CTRL, 0xA1);
>  }
>  
>  static int tqma93xx_probe(struct device *dev)
> 




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