[PATCH] rockchip: rk3308: Drop unused rk_board_init()

[Kever Yang]

Hi Jonas,

On 2024/11/3 04:45, Jonas Karlman wrote:
> Nothing is calling the function rk_board_init() and the io-domain driver
> can handle the functions intended purpose based on information from DT.

Yes, this  should be take care by the new io-domain driver if the dts 
also has correctly config.

The io-domain driver is used for rk3568 firstly, because the IO will 
broken if the io voltage is not

setting correctly(the IO looks working before it's broken).

The cleanup is fine because there is no one to use it, and it would be 
better to make sure the

IO voltage of  rk3308 VCCIO3 is also setting correctly for all boards.

Thanks,
- Kever
>
> Cleanup by removing the unused rk_board_init() function and re-sort
> included headers.
>
> Signed-off-by: Jonas Karlman<jonas at kwiboo.se>
> ---
>   arch/arm/mach-rockchip/rk3308/rk3308.c | 69 +-------------------------
>   1 file changed, 1 insertion(+), 68 deletions(-)
>
> diff --git a/arch/arm/mach-rockchip/rk3308/rk3308.c b/arch/arm/mach-rockchip/rk3308/rk3308.c
> index 03d97e1d7460..6916f1a24441 100644
> --- a/arch/arm/mach-rockchip/rk3308/rk3308.c
> +++ b/arch/arm/mach-rockchip/rk3308/rk3308.c
> @@ -3,15 +3,12 @@
>    *Copyright (c) 2018 Rockchip Electronics Co., Ltd
>    */
>   #include <init.h>
> -#include <malloc.h>
> +#include <asm/armv8/mmu.h>
>   #include <asm/arch-rockchip/bootrom.h>
>   #include <asm/arch-rockchip/grf_rk3308.h>
>   #include <asm/arch-rockchip/hardware.h>
> -#include <asm/gpio.h>
> -#include <debug_uart.h>
>   #include <linux/bitops.h>
>   
> -#include <asm/armv8/mmu.h>
>   static struct mm_region rk3308_mem_map[] = {
>   	{
>   		.virt = 0x0UL,
> @@ -38,22 +35,6 @@ struct mm_region *mem_map = rk3308_mem_map;
>   #define SGRF_BASE	0xff2b0000
>   
>   enum {
> -	GPIO1C7_SHIFT		= 8,
> -	GPIO1C7_MASK		= GENMASK(11, 8),
> -	GPIO1C7_GPIO		= 0,
> -	GPIO1C7_UART1_RTSN,
> -	GPIO1C7_UART2_TX_M0,
> -	GPIO1C7_SPI2_MOSI,
> -	GPIO1C7_JTAG_TMS,
> -
> -	GPIO1C6_SHIFT		= 4,
> -	GPIO1C6_MASK		= GENMASK(7, 4),
> -	GPIO1C6_GPIO		= 0,
> -	GPIO1C6_UART1_CTSN,
> -	GPIO1C6_UART2_RX_M0,
> -	GPIO1C6_SPI2_MISO,
> -	GPIO1C6_JTAG_TCLK,
> -
>   	GPIO4D3_SHIFT           = 6,
>   	GPIO4D3_MASK            = GENMASK(7, 6),
>   	GPIO4D3_GPIO            = 0,
> @@ -116,60 +97,12 @@ enum {
>   	GPIO2A2_SEL_SRC_CTRL_SEL_PLUS	= 1,
>   };
>   
> -enum {
> -	IOVSEL3_CTRL_SHIFT	= 8,
> -	IOVSEL3_CTRL_MASK	= BIT(8),
> -	VCCIO3_SEL_BY_GPIO	= 0,
> -	VCCIO3_SEL_BY_IOVSEL3,
> -
> -	IOVSEL3_SHIFT		= 3,
> -	IOVSEL3_MASK		= BIT(3),
> -	VCCIO3_3V3		= 0,
> -	VCCIO3_1V8,
> -};
> -
> -/*
> - * The voltage of VCCIO3(which is the voltage domain of emmc/flash/sfc
> - * interface) can indicated by GPIO0_A4 or io_vsel3. The SOC defaults
> - * use GPIO0_A4 to indicate power supply voltage for VCCIO3 by hardware,
> - * then we can switch to io_vsel3 after system power on, and release GPIO0_A4
> - * for other usage.
> - */
> -
> -#define GPIO0_A4	4
> -
>   const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
>   	[BROM_BOOTSOURCE_EMMC] = "/mmc at ff490000",
>   	[BROM_BOOTSOURCE_SPINOR] = "/spi at ff4c0000/flash at 0",
>   	[BROM_BOOTSOURCE_SD] = "/mmc at ff480000",
>   };
>   
> -int rk_board_init(void)
> -{
> -	static struct rk3308_grf * const grf = (void *)GRF_BASE;
> -	u32 val;
> -	int ret;
> -
> -	ret = gpio_request(GPIO0_A4, "gpio0_a4");
> -	if (ret < 0) {
> -		printf("request for gpio0_a4 failed:%d\n", ret);
> -		return 0;
> -	}
> -
> -	gpio_direction_input(GPIO0_A4);
> -
> -	if (gpio_get_value(GPIO0_A4))
> -		val = VCCIO3_SEL_BY_IOVSEL3 << IOVSEL3_CTRL_SHIFT |
> -		      VCCIO3_1V8 << IOVSEL3_SHIFT;
> -	else
> -		val = VCCIO3_SEL_BY_IOVSEL3 << IOVSEL3_CTRL_SHIFT |
> -		      VCCIO3_3V3 << IOVSEL3_SHIFT;
> -	rk_clrsetreg(&grf->soc_con0, IOVSEL3_CTRL_MASK | IOVSEL3_MASK, val);
> -
> -	gpio_free(GPIO0_A4);
> -	return 0;
> -}
> -
>   #ifdef CONFIG_DEBUG_UART_BOARD_INIT
>   __weak void board_debug_uart_init(void)
>   {