phy: renesas: Add Renesas Ethernet SERDES driver for R-Car S4-8
Add Renesas Ethernet SERDES driver for R-Car S4-8 (r8a779f0).
The datasheet describes initialization procedure without any information
about registers' name/bits. So, this is all black magic to initialize
the hardware. Especially, all channels should be initialized at once.
This driver is imported and adjusted from Linux 6.3-rc1 commit:
50133cd3e8dd1 ("phy: renesas: r8a779f0-eth-serdes: Remove retry code in .init()")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index a3b9f3c..aca365d 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -41,3 +41,4 @@
obj-y += cadence/
obj-y += ti/
obj-y += qcom/
+obj-y += renesas/