soc: renesas: Enable ARM_ERRATA_754322 for affected Cortex-A9

[ Upstream commit 2eced4607a1e6f51f928ae3e521fe02be5cb7d23 ]

ARM Erratum 754322 affects Cortex-A9 revisions r2p* and r3p*.

Automatically enable support code to mitigate the erratum when compiling
a kernel for any of the affected Renesas SoCs:
  - RZ/A1: r3p0,
  - R-Mobile A1: r2p4,
  - R-Car M1A: r2p2-00rel0,
  - R-Car H1: r3p0,
  - SH-Mobile AG5: r2p2.

EMMA Mobile EV2 (r1p3) and RZ/A2 (r4p1) are not affected.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index 68bfca6f20ddf8a7a07aa36dc447044b86722f09..2040caa6c80857b84b6a078531e8d46655251bdd 100644 (file)
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -55,6 +55,7 @@ config ARCH_EMEV2
 
 config ARCH_R7S72100
        bool "RZ/A1H (R7S72100)"
+       select ARM_ERRATA_754322
        select PM
        select PM_GENERIC_DOMAINS
        select SYS_SUPPORTS_SH_MTU2
@@ -76,6 +77,7 @@ config ARCH_R8A73A4
 config ARCH_R8A7740
        bool "R-Mobile A1 (R8A77400)"
        select ARCH_RMOBILE
+       select ARM_ERRATA_754322
        select RENESAS_INTC_IRQPIN
 
 config ARCH_R8A7743
@@ -103,10 +105,12 @@ config ARCH_R8A77470
 config ARCH_R8A7778
        bool "R-Car M1A (R8A77781)"
        select ARCH_RCAR_GEN1
+       select ARM_ERRATA_754322
 
 config ARCH_R8A7779
        bool "R-Car H1 (R8A77790)"
        select ARCH_RCAR_GEN1
+       select ARM_ERRATA_754322
        select HAVE_ARM_SCU if SMP
        select HAVE_ARM_TWD if SMP
        select SYSC_R8A7779
@@ -150,6 +154,7 @@ config ARCH_R9A06G032
 config ARCH_SH73A0
        bool "SH-Mobile AG5 (R8A73A00)"
        select ARCH_RMOBILE
+       select ARM_ERRATA_754322
        select HAVE_ARM_SCU if SMP
        select HAVE_ARM_TWD if SMP
        select RENESAS_INTC_IRQPIN