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| author | Paul Barker <paul.barker.ct@bp.renesas.com> | 2024-04-17 12:41:31 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2024-04-25 10:35:05 +0200 |
| commit | cd27553b0dee6fdc4a2535ab9fc3c8fbdd811d13 (patch) | |
| tree | 4844dd8ae25f0d9a424b292eb093e7ce7b84681c /drivers/pinctrl | |
| parent | 21fc4d195922f6b29233d2d22e9631cada7db259 (diff) | |
| download | lwn-cd27553b0dee6fdc4a2535ab9fc3c8fbdd811d13.tar.gz lwn-cd27553b0dee6fdc4a2535ab9fc3c8fbdd811d13.zip | |
pinctrl: renesas: rzg2l: Limit 2.5V power supply to Ethernet interfaces
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>
Link: https://lore.kernel.org/r/20240417114132.6605-1-paul.barker.ct@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/renesas/pinctrl-rzg2l.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index dbcf009837ef..c3256bfde502 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: |