Thread (24 messages) 24 messages, 9 authors, 2021-11-28

Re: [PATCH v4 04/12] ARM: Add basic support for Airoha EN7523 SoC

From: Robin Murphy <robin.murphy@arm.com>
Date: 2021-11-25 13:23:41
Also in: lkml

On 2021-11-25 11:07, Felix Fietkau wrote:
quoted hunk ↗ jump to hunk
From: John Crispin <john@phrozen.org>

EN7523 is an armv8 based silicon used inside broadband access type devices
such as xPON and xDSL. It shares various silicon blocks with MediaTek
silicon such as the MT7622.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <redacted>
---
  arch/arm/Kconfig | 14 ++++++++++++++
  1 file changed, 14 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f0f9e8bec83a..8468361a8721 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -573,6 +573,20 @@ config ARCH_VIRT
  	select HAVE_ARM_ARCH_TIMER
  	select ARCH_SUPPORTS_BIG_ENDIAN
  
+config ARCH_AIROHA
+	bool "Airoha SoC Support"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GIC_V3
+	select ARM_DMA_USE_IOMMU
Is this really needed? TBH I'd be rather surprised to see IOMMUs in a 
small-scale embedded router SoC, or are there others in a similar vein 
to MT7623N with random multimedia bits thrown in as well?
+	select ARM_PSCI
+	select HAVE_ARM_ARCH_TIMER
+	select IOMMU_DMA
This does nothing (except bloat your image with some dead code which 
won't be called).

Robin.
+	select COMMON_CLK
+	help
+	  Support for Airoha EN7523 SoCs
+
  #
  # This is sorted alphabetically by mach-* pathname.  However, plat-*
  # Kconfigs may be included either alphabetically (according to the
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