drivers/pinctrl/renesas/pinctrl-rzg2l.c | 2 ++ 1 file changed, 2 insertions(+)
The RZ/G3S SoC supports configurable supply voltages for several of its
I/O interfaces. All of these interfaces support both 1.8V and 3.3V
supplies, but only the Ethernet and XSPI interfaces support a 2.5V
supply.
Voltage selection for the XSPI interface is not yet supported, so this
leaves only the Ethernet interfaces currently supporting selection of a
2.5V supply. So we need to return an error if there is an attempt to
select a 2.5V supply for any non-Ethernet interface.
Fixes: 51996952b8b5 ("pinctrl: renesas: rzg2l: Add support to select power source for Ethernet pins")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
---
drivers/pinctrl/renesas/pinctrl-rzg2l.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index eb5a8c654260..33602f0e4dad 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -892,6 +892,8 @@ static int rzg2l_set_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps
val = PVDD_1800;
break;
case 2500:
+ if (!(caps & (PIN_CFG_IO_VMC_ETH0 | PIN_CFG_IO_VMC_ETH1)))
+ return -EINVAL;
val = PVDD_2500;
break;
case 3300:
--
2.39.2
On Wed, Apr 17, 2024 at 1:41 PM Paul Barker <paul.barker.ct@bp.renesas.com> wrote: > The RZ/G3S SoC supports configurable supply voltages for several of its > I/O interfaces. All of these interfaces support both 1.8V and 3.3V > supplies, but only the Ethernet and XSPI interfaces support a 2.5V > supply. > > Voltage selection for the XSPI interface is not yet supported, so this > leaves only the Ethernet interfaces currently supporting selection of a > 2.5V supply. So we need to return an error if there is an attempt to > select a 2.5V supply for any non-Ethernet interface. > > Fixes: 51996952b8b5 ("pinctrl: renesas: rzg2l: Add support to select power source for Ethernet pins") > Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> i.e. will queue in renesas-clk for v6.10. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org 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
On Wed, Apr 24, 2024 at 3:24 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote: > On Wed, Apr 17, 2024 at 1:41 PM Paul Barker > <paul.barker.ct@bp.renesas.com> wrote: > > The RZ/G3S SoC supports configurable supply voltages for several of its > > I/O interfaces. All of these interfaces support both 1.8V and 3.3V > > supplies, but only the Ethernet and XSPI interfaces support a 2.5V > > supply. > > > > Voltage selection for the XSPI interface is not yet supported, so this > > leaves only the Ethernet interfaces currently supporting selection of a > > 2.5V supply. So we need to return an error if there is an attempt to > > select a 2.5V supply for any non-Ethernet interface. > > > > Fixes: 51996952b8b5 ("pinctrl: renesas: rzg2l: Add support to select power source for Ethernet pins") > > Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> > > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> > i.e. will queue in renesas-clk for v6.10. renesas-pinctrl, of course ;-) Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org 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
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