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-rw-r--r--target/linux/at91/patches-5.15/241-clk-at91-clk-master-mask-mckr-against-layout-mask.patch46
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/at91/patches-5.15/241-clk-at91-clk-master-mask-mckr-against-layout-mask.patch b/target/linux/at91/patches-5.15/241-clk-at91-clk-master-mask-mckr-against-layout-mask.patch
new file mode 100644
index 0000000000..14fa690769
--- /dev/null
+++ b/target/linux/at91/patches-5.15/241-clk-at91-clk-master-mask-mckr-against-layout-mask.patch
@@ -0,0 +1,46 @@
+From 27c11c09346b7b9f67eeb39db1b943f4a9742ff3 Mon Sep 17 00:00:00 2001
+From: Claudiu Beznea <claudiu.beznea@microchip.com>
+Date: Mon, 11 Oct 2021 14:27:13 +0300
+Subject: [PATCH 241/247] clk: at91: clk-master: mask mckr against layout->mask
+
+Mask values read/written from/to MCKR against layout->mask as this
+mask may be different b/w PMC versions.
+
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Link: https://lore.kernel.org/r/20211011112719.3951784-10-claudiu.beznea@microchip.com
+Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+---
+ drivers/clk/at91/clk-master.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+--- a/drivers/clk/at91/clk-master.c
++++ b/drivers/clk/at91/clk-master.c
+@@ -186,8 +186,8 @@ static int clk_master_div_set_rate(struc
+ if (ret)
+ goto unlock;
+
+- tmp = mckr & master->layout->mask;
+- tmp = (tmp >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
++ mckr &= master->layout->mask;
++ tmp = (mckr >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
+ if (tmp == div)
+ goto unlock;
+
+@@ -384,6 +384,7 @@ static unsigned long clk_master_pres_rec
+ regmap_read(master->regmap, master->layout->offset, &val);
+ spin_unlock_irqrestore(master->lock, flags);
+
++ val &= master->layout->mask;
+ pres = (val >> master->layout->pres_shift) & MASTER_PRES_MASK;
+ if (pres == 3 && characteristics->have_div3_pres)
+ pres = 3;
+@@ -403,6 +404,8 @@ static u8 clk_master_pres_get_parent(str
+ regmap_read(master->regmap, master->layout->offset, &mckr);
+ spin_unlock_irqrestore(master->lock, flags);
+
++ mckr &= master->layout->mask;
++
+ return mckr & AT91_PMC_CSS;
+ }
+