Merge tag 'omap-for-v4.3/fixes-rc6' of git://git.kernel.org/pub/scm/l…

…inux/kernel/git/tmlind/linux-omap into fixes Merge "Fixes for omaps for v4.3-rc cycle" from Tony Lindgren: - Fix oops with LPAE and moew than 2GB of memory by enabling ZONE_DMA for LPAE. Probably no need for stable on this one as we only recently ran into this with the mainline kernel - Fix imprecise external abort caused by bogus SRAM init. This affects dm814x recently merged, so no need for stable on this one AFAIK * tag 'omap-for-v4.3/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Fix imprecise external abort caused by bogus SRAM init ARM: OMAP2+: Fix oops with LPAE and more than 2GB of memory
mariux64 · Oct 21, 2015 · 6701ef0 · 6701ef0
2 parents 4f1d841 + 57df538
commit 6701ef0
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Showing 5 changed files with 22 additions and 3 deletions.
diff --git a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
@@ -12,7 +12,7 @@
 
 / {
 	model = "LogicPD Zoom DM3730 Torpedo Development Kit";
-	compatible = "logicpd,dm3730-torpedo-devkit", "ti,omap36xx";
+	compatible = "logicpd,dm3730-torpedo-devkit", "ti,omap3630", "ti,omap3";
 
 	gpio_keys {
 		compatible = "gpio-keys";

diff --git a/arch/arm/boot/dts/omap3-evm-37xx.dts b/arch/arm/boot/dts/omap3-evm-37xx.dts
@@ -13,7 +13,7 @@
 
 / {
 	model = "TI OMAP37XX EVM (TMDSEVM3730)";
-	compatible = "ti,omap3-evm-37xx", "ti,omap36xx";
+	compatible = "ti,omap3-evm-37xx", "ti,omap3630", "ti,omap3";
 
 	memory {
 		device_type = "memory";

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
@@ -49,6 +49,7 @@ config SOC_OMAP5
 	select OMAP_INTERCONNECT
 	select OMAP_INTERCONNECT_BARRIER
 	select PM_OPP if PM
+	select ZONE_DMA if ARM_LPAE
 
 config SOC_AM33XX
 	bool "TI AM33XX"
@@ -78,6 +79,7 @@ config SOC_DRA7XX
 	select OMAP_INTERCONNECT
 	select OMAP_INTERCONNECT_BARRIER
 	select PM_OPP if PM
+	select ZONE_DMA if ARM_LPAE
 
 config ARCH_OMAP2PLUS
 	bool

diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
@@ -106,6 +106,7 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 MACHINE_END
 
 static const char *const omap36xx_boards_compat[] __initconst = {
+	"ti,omap3630",
 	"ti,omap36xx",
 	NULL,
 };
@@ -243,6 +244,9 @@ static const char *const omap5_boards_compat[] __initconst = {
 };
 
 DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
+#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
+	.dma_zone_size	= SZ_2G,
+#endif
 	.reserve	= omap_reserve,
 	.smp		= smp_ops(omap4_smp_ops),
 	.map_io		= omap5_map_io,
@@ -288,6 +292,9 @@ static const char *const dra74x_boards_compat[] __initconst = {
 };
 
 DT_MACHINE_START(DRA74X_DT, "Generic DRA74X (Flattened Device Tree)")
+#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
+	.dma_zone_size	= SZ_2G,
+#endif
 	.reserve	= omap_reserve,
 	.smp		= smp_ops(omap4_smp_ops),
 	.map_io		= dra7xx_map_io,
@@ -308,6 +315,9 @@ static const char *const dra72x_boards_compat[] __initconst = {
 };
 
 DT_MACHINE_START(DRA72X_DT, "Generic DRA72X (Flattened Device Tree)")
+#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
+	.dma_zone_size	= SZ_2G,
+#endif
 	.reserve	= omap_reserve,
 	.map_io		= dra7xx_map_io,
 	.init_early	= dra7xx_init_early,

diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
@@ -559,7 +559,14 @@ static void pdata_quirks_check(struct pdata_init *quirks)
 
 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
 {
-	omap_sdrc_init(NULL, NULL);
+	/*
+	 * We still need this for omap2420 and omap3 PM to work, others are
+	 * using drivers/misc/sram.c already.
+	 */
+	if (of_machine_is_compatible("ti,omap2420") ||
+	    of_machine_is_compatible("ti,omap3"))
+		omap_sdrc_init(NULL, NULL);
+
 	pdata_quirks_check(auxdata_quirks);
 	of_platform_populate(NULL, omap_dt_match_table,
 			     omap_auxdata_lookup, NULL);