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author | Lars-Peter Clausen <lars@metafoo.de> | 2015-03-26 19:46:01 +0000 |
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committer | Lars-Peter Clausen <lars@metafoo.de> | 2015-03-26 19:46:01 +0000 |
commit | f994693546274d3c690c89a736665f20c66f47f4 (patch) | |
tree | 2e42deb727546b00cedeb995145156416ce14cf9 /target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch | |
parent | ef1773c07cf4f388187e7bfb911665b9a5f3dc08 (diff) | |
download | master-187ad058-f994693546274d3c690c89a736665f20c66f47f4.tar.gz master-187ad058-f994693546274d3c690c89a736665f20c66f47f4.tar.bz2 master-187ad058-f994693546274d3c690c89a736665f20c66f47f4.zip |
xburst: Update to 3.18
Update the xburst target to kernel version 3.18 and also remove the broken 3.10 support.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45031 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch')
-rw-r--r-- | target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch b/target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch new file mode 100644 index 0000000000..2dd8858d4b --- /dev/null +++ b/target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch @@ -0,0 +1,60 @@ +From f05b1ecd7e4fde7e69320a4b7be461636e982991 Mon Sep 17 00:00:00 2001 +From: Paul Cercueil <paul@crapouillou.net> +Date: Thu, 13 Sep 2012 00:09:20 +0200 +Subject: [PATCH 5/7] RTC: JZ4740: Init the "regulator" register on startup. + +This register controls the accuracy of the RTC. uC/OS-II use +the RTC as a 100Hz clock, and writes a completely wrong value +on that register, that we have to overwrite if we want a working +real-time clock. + +Signed-off-by: Paul Cercueil <paul@crapouillou.net> +--- + drivers/rtc/rtc-jz4740.c | 17 +++++++++++++++++ + 1 file changed, 17 insertions(+) + +diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c +index 08f5160..5f027dc 100644 +--- a/drivers/rtc/rtc-jz4740.c ++++ b/drivers/rtc/rtc-jz4740.c +@@ -15,6 +15,7 @@ + */ + + #include <linux/io.h> ++#include <linux/clk.h> + #include <linux/kernel.h> + #include <linux/module.h> + #include <linux/platform_device.h> +@@ -216,6 +217,7 @@ static int jz4740_rtc_probe(struct platform_device *pdev) + struct jz4740_rtc *rtc; + uint32_t scratchpad; + struct resource *mem; ++ struct clk *rtc_clk; + + rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); + if (!rtc) +@@ -263,6 +265,21 @@ static int jz4740_rtc_probe(struct platform_device *pdev) + } + } + ++ rtc_clk = clk_get(&pdev->dev, "rtc"); ++ if (IS_ERR(rtc_clk)) { ++ dev_err(&pdev->dev, "Failed to get RTC clock\n"); ++ return PTR_ERR(rtc_clk); ++ } ++ ++ /* TODO: initialize the ADJC bits (25:16) to fine-tune ++ * the accuracy of the RTC */ ++ ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_REGULATOR, ++ (clk_get_rate(rtc_clk) - 1) & 0xffff); ++ clk_put(rtc_clk); ++ ++ if (ret) ++ dev_warn(&pdev->dev, "Could not update RTC regulator register\n"); ++ + return 0; + } + +-- +1.7.10.4 + |