package: uboot-sunxi: various changes

[openwrt.git] / package / boot / uboot-sunxi / patches / 012-sun6i-fix-clock_twi_onoff.patch

diff --git a/package/boot/uboot-sunxi/patches/012-sun6i-fix-clock_twi_onoff.patch b/package/boot/uboot-sunxi/patches/012-sun6i-fix-clock_twi_onoff.patch
new file mode 100644 (file)
index 0000000..9471b39
--- /dev/null
+++ b/package/boot/uboot-sunxi/patches/012-sun6i-fix-clock_twi_onoff.patch
@@ -0,0 +1,40 @@
+From 730d2f3a41c5ccae71b5008fffdf697d143be68c Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Wed, 16 Mar 2016 20:44:51 +0100
+Subject: [PATCH] sunxi: Fix clock_twi_onoff for sun6i
+
+The clock_sun6i.c implementation was not deasserting the reset for
+the regular i2c controllers, this commit fixes this.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Acked-by: Ian Campbell <ijc@hellion.org.uk>
+---
+ arch/arm/cpu/armv7/sunxi/clock_sun6i.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
+index 700b605..4e1e1a4 100644
+--- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
++++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
+@@ -100,13 +100,18 @@ int clock_twi_onoff(int port, int state)
+               return 0;
+       }
+ 
+-      /* set the apb clock gate for twi */
+-      if (state)
++      /* set the apb clock gate and reset for twi */
++      if (state) {
+               setbits_le32(&ccm->apb2_gate,
+                            CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT+port));
+-      else
++              setbits_le32(&ccm->apb2_reset_cfg,
++                           1 << (APB2_RESET_TWI_SHIFT + port));
++      } else {
++              clrbits_le32(&ccm->apb2_reset_cfg,
++                           1 << (APB2_RESET_TWI_SHIFT + port));
+               clrbits_le32(&ccm->apb2_gate,
+                            CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT+port));
++      }
+ 
+       return 0;
+ }