[PATCH 10/15] soc: renesas: Introduce ARCH_RCAR_GEN4

[Geert Uytterhoeven]

Currently, all Kconfig symbols for R-Car Gen4 SoCs select the
ARCH_RCAR_GEN3 SoC family symbol, which might confuse the casual reader.

Fix this by introducing a new SoC family symbol for R-Car Gen4 SoCs.
For now this just selects ARCH_RCAR_GEN3, to avoid duplication, and to
relax dependencies.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
Once "[PATCH] i2c: rcar: Prepare for the advent of ARCH_RCAR_GEN4"[1]
has been applied, ARCH_RCAR_GEN4 can stop selecting ARCH_RCAR_GEN3.

I'm open for suggestions how to improve this.
Perhaps factor out common parts into ARCH_RCAR?

[1] https://lore.kernel.org/r/bf7b105f7d9728ae5cd9fa99d1cdd278d71e7df2.1704723713.git.geert+renesas@glider.be
---
 drivers/soc/renesas/Kconfig | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index 0986672f63757663..784a2b50561d5a97 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -34,6 +34,10 @@ config ARCH_RCAR_GEN3
 	select SYS_SUPPORTS_SH_CMT
 	select SYS_SUPPORTS_SH_TMU
 
+config ARCH_RCAR_GEN4
+	bool
+	select ARCH_RCAR_GEN3
+
 config ARCH_RMOBILE
 	bool
 	select PM
@@ -240,7 +244,7 @@ config ARCH_R8A77961
 
 config ARCH_R8A779F0
 	bool "ARM64 Platform support for R-Car S4-8"
-	select ARCH_RCAR_GEN3
+	select ARCH_RCAR_GEN4
 	select SYSC_R8A779F0
 	help
 	  This enables support for the Renesas R-Car S4-8 SoC.
@@ -261,14 +265,14 @@ config ARCH_R8A77970
 
 config ARCH_R8A779A0
 	bool "ARM64 Platform support for R-Car V3U"
-	select ARCH_RCAR_GEN3
+	select ARCH_RCAR_GEN4
 	select SYSC_R8A779A0
 	help
 	  This enables support for the Renesas R-Car V3U SoC.
 
 config ARCH_R8A779G0
 	bool "ARM64 Platform support for R-Car V4H"
-	select ARCH_RCAR_GEN3
+	select ARCH_RCAR_GEN4
 	select SYSC_R8A779G0
 	help
 	  This enables support for the Renesas R-Car V4H SoC.
-- 
2.34.1