at91: add kernel support for sama7g5 soc

[openwrt/staging/mkresin.git] / target / linux / at91 / patches-5.10 / 202-ARM-at91-pm-use-r7-instead-of-tmp1.patch

diff --git a/target/linux/at91/patches-5.10/202-ARM-at91-pm-use-r7-instead-of-tmp1.patch b/target/linux/at91/patches-5.10/202-ARM-at91-pm-use-r7-instead-of-tmp1.patch
new file mode 100644 (file)
index 0000000..f53d385
--- /dev/null
+++ b/target/linux/at91/patches-5.10/202-ARM-at91-pm-use-r7-instead-of-tmp1.patch
@@ -0,0 +1,65 @@
+From 8a7a4cf3860910e460e2c3ca467b1dabf7ce9827 Mon Sep 17 00:00:00 2001
+From: Claudiu Beznea <claudiu.beznea@microchip.com>
+Date: Thu, 15 Apr 2021 13:49:52 +0300
+Subject: [PATCH 202/247] ARM: at91: pm: use r7 instead of tmp1
+
+Use r7 instead of tmp1 in macros. This prepares the filed for
+next commits.
+
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Link: https://lore.kernel.org/r/20210415105010.569620-7-claudiu.beznea@microchip.com
+---
+ arch/arm/mach-at91/pm_suspend.S | 18 ++++++++++++------
+ 1 file changed, 12 insertions(+), 6 deletions(-)
+
+diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
+index b683c2caa40b..3d20c9880fee 100644
+--- a/arch/arm/mach-at91/pm_suspend.S
++++ b/arch/arm/mach-at91/pm_suspend.S
+@@ -31,30 +31,36 @@ tmp3       .req    r6
+ 
+ /*
+  * Wait until master oscillator has stabilized.
++ *
++ * Side effects: overwrites r7
+  */
+       .macro wait_moscrdy
+-1:    ldr     tmp1, [pmc, #AT91_PMC_SR]
+-      tst     tmp1, #AT91_PMC_MOSCS
++1:    ldr     r7, [pmc, #AT91_PMC_SR]
++      tst     r7, #AT91_PMC_MOSCS
+       beq     1b
+       .endm
+ 
+ /*
+  * Wait for main oscillator selection is done
++ *
++ * Side effects: overwrites r7
+  */
+       .macro wait_moscsels
+-1:    ldr     tmp1, [pmc, #AT91_PMC_SR]
+-      tst     tmp1, #AT91_PMC_MOSCSELS
++1:    ldr     r7, [pmc, #AT91_PMC_SR]
++      tst     r7, #AT91_PMC_MOSCSELS
+       beq     1b
+       .endm
+ 
+ /*
+  * Put the processor to enter the idle state
++ *
++ * Side effects: overwrites r7
+  */
+       .macro at91_cpu_idle
+ 
+ #if defined(CONFIG_CPU_V7)
+-      mov     tmp1, #AT91_PMC_PCK
+-      str     tmp1, [pmc, #AT91_PMC_SCDR]
++      mov     r7, #AT91_PMC_PCK
++      str     r7, [pmc, #AT91_PMC_SCDR]
+ 
+       dsb
+ 
+-- 
+2.32.0
+