Re: [PATCH 30/37] pinctrl: renesas: rzg2l: add support for RZ/G3S SoC

From: Geert Uytterhoeven
Date: Thu Sep 21 2023 - 14:51:43 EST

Hi Claudiu,

On Tue, Sep 12, 2023 at 6:53 AM Claudiu <claudiu.beznea@xxxxxxxxx> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
>
> Add basic support for RZ/G3S to be able to boot from SD card, have a
> running console port and use GPIOs. RZ/G3S has 82 general-purpose IO
> ports. Support for the remaining pin functions (e.g. Ethernet, XSPI)
> will be added along with controller specific support.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>

Thanks for your patch!

> --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -1330,6 +1336,36 @@ static const u32 r9a07g043_gpio_configs[] = {
> RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
> };
>
> +static const u32 r9a08g045_gpio_configs[] = {
> + RZG2L_GPIO_PORT_PACK(4, 0x20, RZG3S_MPXED_PIN_FUNCS(A)), /* P0 */
> + RZG2L_GPIO_PORT_PACK(5, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH0)), /* P1 */

P1_0 and P7_0 have IEN functionality.
I don't know how to represent that...

> + RZG2L_GPIO_PORT_PACK(4, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH0)), /* P2 */
> + RZG2L_GPIO_PORT_PACK(4, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH0)), /* P3 */
> + RZG2L_GPIO_PORT_PACK(6, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH0)), /* P4 */
> + RZG2L_GPIO_PORT_PACK(5, 0x21, RZG3S_MPXED_PIN_FUNCS(A)), /* P5 */
> + RZG2L_GPIO_PORT_PACK(5, 0x22, RZG3S_MPXED_PIN_FUNCS(A)), /* P6 */
> + RZG2L_GPIO_PORT_PACK(5, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH1)), /* P7 */
> + RZG2L_GPIO_PORT_PACK(5, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH1)), /* P8 */
> + RZG2L_GPIO_PORT_PACK(4, 0x36, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH1)), /* P9 */
> + RZG2L_GPIO_PORT_PACK(5, 0x37, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
> + PIN_CFG_IO_VMC_ETH1)), /* P10 */
> + RZG2L_GPIO_PORT_PACK(4, 0x23, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN), /* P11 */

P11_0 does not have IEN functionality.
I don't know how to represent that...

> + RZG2L_GPIO_PORT_PACK(2, 0x24, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN), /* P12 */
> + RZG2L_GPIO_PORT_PACK(5, 0x25, RZG3S_MPXED_PIN_FUNCS(A)), /* P13 */
> + RZG2L_GPIO_PORT_PACK(3, 0x26, RZG3S_MPXED_PIN_FUNCS(A)), /* P14 */
> + RZG2L_GPIO_PORT_PACK(4, 0x27, RZG3S_MPXED_PIN_FUNCS(A)), /* P15 */
> + RZG2L_GPIO_PORT_PACK(2, 0x28, RZG3S_MPXED_PIN_FUNCS(A)), /* P16 */
> + RZG2L_GPIO_PORT_PACK(4, 0x29, RZG3S_MPXED_PIN_FUNCS(A)), /* P17 */
> + RZG2L_GPIO_PORT_PACK(6, 0x2a, RZG3S_MPXED_PIN_FUNCS(A)), /* P18 */
> +};
> +
> static const struct {
> struct rzg2l_dedicated_configs common[35];
> struct rzg2l_dedicated_configs rzg2l_pins[7];
> @@ -1416,6 +1452,46 @@ static const struct {
> }
> };
>
> +static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
> + { "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
> + PIN_CFG_FILCLKSEL)) },
> + { "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
> + PIN_CFG_SOFT_PS)) },
> + { "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
> + { "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0x6, 0, PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS) },
> + { "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x10, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x10, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x10, 2, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x11, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x11, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x11, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x11, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x11, 4, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x11, 5, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x11, 6, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x11, 7, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD0)) },
> + { "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x12, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD1)) },
> + { "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x12, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD1)) },
> + { "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x13, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD1)) },
> + { "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x13, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD1)) },
> + { "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x13, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD1)) },
> + { "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x13, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
> + PIN_CFG_IO_VMC_SD1)) },

Is there any specific reason you left out the XSPI, Audio clock, and I3C pins?

> +};
> +
> static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
> {
> unsigned int gpioint;
> @@ -1823,6 +1899,40 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
> .iolh_groupb_oi = { 100, 66, 50, 33, },
> };
>
> +static const struct rzg2l_hwcfg rzg3s_hwcfg = {
> + .regs = {
> + .pwpr = 0x3000,
> + .sd_ch = 0x3004,
> + },
> + .iolh_groupa_ua = {
> + /* 1v8 power source */
> + [RZG2L_IOLH_IDX_1V8] = 2200, 4400, 9000, 10000,
> + /* 2v5 power source */
> + [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] = RZG2L_INVALID_IOLH_VAL,

Can be dropped once zero means invalid.

> + /* 3v3 power source */
> + [RZG2L_IOLH_IDX_3V3] = 1900, 4000, 8000, 9000,
> + },
> + .iolh_groupb_ua = {
> + /* 1v8 power source */
> + [RZG2L_IOLH_IDX_1V8] = 7000, 8000, 9000, 10000,
> + /* 2v5 power source */
> + [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] = RZG2L_INVALID_IOLH_VAL,

Can be dropped once zero means invalid.

> + /* 3v3 power source */
> + [RZG2L_IOLH_IDX_3V3] = 4000, 6000, 8000, 9000,
> + },
> + .iolh_groupc_ua = {
> + /* 1v8 power source */
> + [RZG2L_IOLH_IDX_1V8] = 5200, 6000, 6550, 6800,
> + /* 2v5 source */
> + [RZG2L_IOLH_IDX_2V5] = 4700, 5300, 5800, 6100,
> + /* 3v3 power source */
> + [RZG2L_IOLH_IDX_3V3] = 4500, 5200, 5700, 6050,
> + },
> + .drive_strength_ua = true,
> + .iolh_groupb_oi = { [0 ... 3] = RZG2L_INVALID_IOLH_VAL, },
> + .func_base = 1,
> +};
> +
> static struct rzg2l_pinctrl_data r9a07g043_data = {
> .port_pins = rzg2l_gpio_names,
> .port_pin_configs = r9a07g043_gpio_configs,
> @@ -1844,6 +1954,16 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
> .hwcfg = &rzg2l_hwcfg,
> };
>
> +static struct rzg2l_pinctrl_data r9a08g045_data = {
> + .port_pins = rzg2l_gpio_names,
> + .port_pin_configs = r9a08g045_gpio_configs,
> + .n_ports = ARRAY_SIZE(r9a08g045_gpio_configs),
> + .dedicated_pins = rzg3s_dedicated_pins,
> + .n_port_pins = ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT,
> + .n_dedicated_pins = ARRAY_SIZE(rzg3s_dedicated_pins),
> + .hwcfg = &rzg3s_hwcfg,
> +};
> +
> static const struct of_device_id rzg2l_pinctrl_of_table[] = {
> {
> .compatible = "renesas,r9a07g043-pinctrl",

Please add a BUILD_BUG_ON() check for RZ/G3S to the
rzg2l_pinctrl_probe() function, as is done for the other SoCs in
the family.

The rest LGTM.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds