linux-kernel - [PATCH 1/3] drivers: sh: Disable PM runtime for multi-platform sh73a0 with genpd

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Message-Id: <41b4b3bc7905615f7617c88bf9cf4b3b04bda78f.1430370969.git.horms+renesas@verge.net.au>
Date:	Thu, 30 Apr 2015 14:17:35 +0900
From:	Simon Horman <horms+renesas@...ge.net.au>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org,
	Magnus Damm <magnus.damm@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Simon Horman <horms+renesas@...ge.net.au>
Subject: [PATCH 1/3] drivers: sh: Disable PM runtime for multi-platform sh73a0 with genpd

From: Geert Uytterhoeven <geert+renesas@...der.be>

If the default PM domain using PM_CLK is used for PM runtime, the real PM
domain(s) cannot be registered from DT later.

Hence do not enable it when running a multi-platform kernel with genpd
support on an sh73a0. The R-Mobile PM domain driver will take care of
PM runtime management of the module clocks.

The default PM domain is still needed for:
  - platforms without genpd support,
  - the legacy (non-DT) case, where genpd may take over later, except
    for the C5 "always on" PM domain.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Simon Horman <horms+renesas@...ge.net.au>
---
 drivers/sh/pm_runtime.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/sh/pm_runtime.c b/drivers/sh/pm_runtime.c
index cd4c293f0dd0..6b16a67ba618 100644
--- a/drivers/sh/pm_runtime.c
+++ b/drivers/sh/pm_runtime.c
@@ -83,6 +83,7 @@ static int __init sh_pm_runtime_init(void)
 		    !of_machine_is_compatible("renesas,r8a73a4") &&
 #ifndef CONFIG_PM_GENERIC_DOMAINS_OF
 		    !of_machine_is_compatible("renesas,r8a7740") &&
+		    !of_machine_is_compatible("renesas,sh73a0") &&
 #endif
 		    !of_machine_is_compatible("renesas,r8a7778") &&
 		    !of_machine_is_compatible("renesas,r8a7779") &&
@@ -91,8 +92,7 @@ static int __init sh_pm_runtime_init(void)
 		    !of_machine_is_compatible("renesas,r8a7792") &&
 		    !of_machine_is_compatible("renesas,r8a7793") &&
 		    !of_machine_is_compatible("renesas,r8a7794") &&
-		    !of_machine_is_compatible("renesas,sh7372") &&
-		    !of_machine_is_compatible("renesas,sh73a0"))
+		    !of_machine_is_compatible("renesas,sh7372"))
 			return 0;
 	}
 
-- 
2.1.4

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