spi: rpc-if: Add resume support for RZ/G3E

[ Upstream commit ad4728740bd68d74365a43acc25a65339a9b2173 ]

On RZ/G3E using PSCI, s2ram powers down the SoC. After resume,
reinitialize the hardware for SPI operations.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20250921112649.104516-3-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-rpc-if.c b/drivers/spi/spi-rpc-if.c
index c24dad51a0e96624ae980da4e0cf81215e205704..43e829251af5910892b5fff770c5a68334bd3c26 100644 (file)
--- a/drivers/spi/spi-rpc-if.c
+++ b/drivers/spi/spi-rpc-if.c
@@ -193,6 +193,8 @@ static int __maybe_unused rpcif_spi_resume(struct device *dev)
 {
        struct spi_controller *ctlr = dev_get_drvdata(dev);
 
+       rpcif_hw_init(dev, false);
+
        return spi_controller_resume(ctlr);
 }