linux-kernel - [PATCH] blackfin: Kconfig: Let PLL_BYPASS and MPU depend on some BF

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Message-ID: <BLU436-SMTP150B6E67EC4DEF91B1FEEABB9F20@phx.gbl>
Date:	Fri, 3 Apr 2015 05:25:03 +0800
From:	Chen Gang <xili_gchen_5257@...mail.com>
To:	"realmz6@...il.com" <realmz6@...il.com>
CC:	"adi-buildroot-devel@...ts.sourceforge.net" 
	<adi-buildroot-devel@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] blackfin: Kconfig: Let PLL_BYPASS and MPU depend on some
 BF_REV of BF533

For allmodconfig, it uses BF533 which will cause 3 issues for common
checking:

 - The first 2 issues are about PLL_BYPASS, it needs BF_REV_0_6 (which
   just match the compiler's output for __SILICON_REVISION__).

 - The last issue is about MPU, it needs BF_REV_0_5 or BF_REV_0_6 (which
   just match the compiler's output for __SILICON_REVISION__).

The related error with allmodconfig:

    CC      arch/blackfin/mach-common/arch_checks.o
  arch/blackfin/mach-common/arch_checks.c:24:3: error: #error "Sclk value selected is less than minimum. Please select a proper value for SCLK multiplier"
   # error "Sclk value selected is less than minimum. Please select a proper value for SCLK multiplier"
     ^
  arch/blackfin/mach-common/arch_checks.c:28:3: error: #error "ANOMALY 05000273, please make sure CCLK is at least 2x SCLK"
   # error "ANOMALY 05000273, please make sure CCLK is at least 2x SCLK"
     ^
  arch/blackfin/mach-common/arch_checks.c:51:3: error: #error the MPU will not function safely while Anomaly 05000263 applies
   # error the MPU will not function safely while Anomaly 05000263 applies
     ^

Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 arch/blackfin/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index af76634..26fbee7 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -449,7 +449,7 @@ config BFIN_KERNEL_CLOCK
 
 config PLL_BYPASS
 	bool "Bypass PLL"
-	depends on BFIN_KERNEL_CLOCK && (!BF60x)
+	depends on BFIN_KERNEL_CLOCK && (!BF60x) && ((!BF533) || BF_REV_0_6)
 	default n
 
 config CLKIN_HALF
@@ -1112,6 +1112,7 @@ endchoice
 comment "Memory Protection Unit"
 config MPU
 	bool "Enable the memory protection unit"
+	depends on (!BF533) || BF_REV_0_6 || BF_REV_0_5
 	default n
 	help
 	  Use the processor's MPU to protect applications from accessing
-- 
1.9.3
--
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