linux-kernel - [PATCH] ARM: at91: remove unnecessary of_platform_default

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Date:   Tue, 24 Jan 2023 12:23:48 +0100
From:   <nicolas.ferre@...rochip.com>
To:     <robh@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        <ryan.wanner@...rochip.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] ARM: at91: remove unnecessary of_platform_default_populate calls

From: Rob Herring <robh@...nel.org>

DO NOT APPLY: breaking boot on at91 (sama5d3 xplained / NAND at least)

The DT core will call of_platform_default_populate, so it is not
necessary for machine specific code to call it unless there are custom
match entries, auxdata or parent device. Neither of those apply here, so
remove the call.

Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Rob Herring <robh@...nel.org>
[nicolas.ferre@...rochip.com: update to newest kernel, add sama7.c file]
Signed-off-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
---
Rob, Alexandre,

This is the updated patch by Rob.
Tested on sama5d3 xplained platform it fails at least with NAND and, as you
observed Alexandre, SRAM.

The pinctrl patch [1] applied seem to solve the problem with GPIO/pinctrl.

So, this move is not ready now, but we can make progress, little by little.

Best regards,
  Nicolas

 arch/arm/mach-at91/at91rm9200.c | 5 -----
 arch/arm/mach-at91/at91sam9.c   | 5 -----
 arch/arm/mach-at91/sama5.c      | 7 +------
 arch/arm/mach-at91/sama7.c      | 4 ----
 4 files changed, 1 insertion(+), 20 deletions(-)

diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index 4f8186211619..e262f5459c76 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -7,17 +7,12 @@
  *                2012 Joachim Eastwood <manabian@...il.com>
  */
 
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
 #include <asm/mach/arch.h>
 
 #include "generic.h"
 
 static void __init at91rm9200_dt_device_init(void)
 {
-	of_platform_default_populate(NULL, NULL, NULL);
-
 	at91rm9200_pm_init();
 }
 
diff --git a/arch/arm/mach-at91/at91sam9.c b/arch/arm/mach-at91/at91sam9.c
index 7e572189a5eb..74b4dd8403a2 100644
--- a/arch/arm/mach-at91/at91sam9.c
+++ b/arch/arm/mach-at91/at91sam9.c
@@ -6,9 +6,6 @@
  *                2011 Nicolas Ferre <nicolas.ferre@...el.com>
  */
 
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
 #include <asm/mach/arch.h>
 #include <asm/system_misc.h>
 
@@ -16,8 +13,6 @@
 
 static void __init at91sam9_init(void)
 {
-	of_platform_default_populate(NULL, NULL, NULL);
-
 	at91sam9_pm_init();
 }
 
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index bf2b5c6a18c6..79dfa257b3b4 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -6,14 +6,11 @@
  *                2013 Ludovic Desroches <ludovic.desroches@...el.com>
  */
 
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
-#include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/outercache.h>
 #include <asm/system_misc.h>
+#include <asm/hardware/cache-l2x0.h>
 
 #include "generic.h"
 #include "sam_secure.h"
@@ -32,7 +29,6 @@ static void __init sama5_secure_cache_init(void)
 
 static void __init sama5_dt_device_init(void)
 {
-	of_platform_default_populate(NULL, NULL, NULL);
 	sama5_pm_init();
 }
 
@@ -61,7 +57,6 @@ MACHINE_END
 
 static void __init sama5d2_init(void)
 {
-	of_platform_default_populate(NULL, NULL, NULL);
 	sama5d2_pm_init();
 }
 
diff --git a/arch/arm/mach-at91/sama7.c b/arch/arm/mach-at91/sama7.c
index bd43733ede18..5faccfe9a9bb 100644
--- a/arch/arm/mach-at91/sama7.c
+++ b/arch/arm/mach-at91/sama7.c
@@ -6,9 +6,6 @@
  *
  */
 
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
 #include <asm/mach/arch.h>
 #include <asm/system_misc.h>
 
@@ -16,7 +13,6 @@
 
 static void __init sama7_dt_device_init(void)
 {
-	of_platform_default_populate(NULL, NULL, NULL);
 	sama7_pm_init();
 }
 
-- 
2.34.1