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authorClaudiu Beznea <claudiu.beznea@microchip.com>2022-02-04 15:57:50 +0200
committerPetr Štetiar <ynezz@true.cz>2022-02-24 19:05:28 +0100
commite58cd453d58b20c6a6f34d3591640aa19aa14d25 (patch)
treea4fef5f5d79575a7a60b516482ee114c1dbc932e /target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch
parent3ed992a99630457f660761ce199e3d2a00f06168 (diff)
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at91: add kernel support for sama7g5 soc
Add kernel support for SAMA7G5 by back-porting mainline kernel patches. Among SAMA7G5 features could be remembered: - ARM Cortex-A7 - double data rate multi-port dynamic RAM controller supporting DDR2, DDR3, DDR3L, LPDDR2, LPDDR3 up to 533MHz - peripherals for audio, video processing - 1 gigabit + 1 megabit Ethernet controllers - 6 CAN controllers - trust zone support - DVFS for CPU - criptography IPs Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Diffstat (limited to 'target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch')
-rw-r--r--target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch60
1 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch b/target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch
new file mode 100644
index 0000000000..bbc0d00eed
--- /dev/null
+++ b/target/linux/at91/patches-5.10/198-ARM-at91-pm-move-the-setup-of-soc_pm.bu-suspended.patch
@@ -0,0 +1,60 @@
+From c8f2a8aaae41fa0a40ad88855ae82696098230d7 Mon Sep 17 00:00:00 2001
+From: Claudiu Beznea <claudiu.beznea@microchip.com>
+Date: Thu, 15 Apr 2021 13:49:48 +0300
+Subject: [PATCH 198/247] ARM: at91: pm: move the setup of soc_pm.bu->suspended
+
+Move the setup of soc_pm.bu->suspended in platform_suspend::begin
+function so that the PMC code in charge with clocks suspend/resume
+to differentiate b/w standard PM mode and backup mode.
+
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
+Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Link: https://lore.kernel.org/r/20210415105010.569620-3-claudiu.beznea@microchip.com
+---
+ arch/arm/mach-at91/pm.c | 15 ++++++++++++---
+ 1 file changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
+index 3fa223c21618..f182d8bf6f82 100644
+--- a/arch/arm/mach-at91/pm.c
++++ b/arch/arm/mach-at91/pm.c
+@@ -214,6 +214,8 @@ static int at91_sam9x60_config_pmc_ws(void __iomem *pmc, u32 mode, u32 polarity)
+ */
+ static int at91_pm_begin(suspend_state_t state)
+ {
++ int ret;
++
+ switch (state) {
+ case PM_SUSPEND_MEM:
+ soc_pm.data.mode = soc_pm.data.suspend_mode;
+@@ -227,7 +229,16 @@ static int at91_pm_begin(suspend_state_t state)
+ soc_pm.data.mode = -1;
+ }
+
+- return at91_pm_config_ws(soc_pm.data.mode, true);
++ ret = at91_pm_config_ws(soc_pm.data.mode, true);
++ if (ret)
++ return ret;
++
++ if (soc_pm.data.mode == AT91_PM_BACKUP)
++ soc_pm.bu->suspended = 1;
++ else if (soc_pm.bu)
++ soc_pm.bu->suspended = 0;
++
++ return 0;
+ }
+
+ /*
+@@ -296,8 +307,6 @@ static int at91_suspend_finish(unsigned long val)
+ static void at91_pm_suspend(suspend_state_t state)
+ {
+ if (soc_pm.data.mode == AT91_PM_BACKUP) {
+- soc_pm.bu->suspended = 1;
+-
+ cpu_suspend(0, at91_suspend_finish);
+
+ /* The SRAM is lost between suspend cycles */
+--
+2.32.0
+