diff options
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 | 55 |
1 files changed, 0 insertions, 55 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 deleted file mode 100644 index f38483ab5c..0000000000 --- a/target/linux/xburst/patches-3.18/005-RTC-JZ4740-Init-the-regulator-register-on-startup.patch +++ /dev/null @@ -1,55 +0,0 @@ -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(+) - ---- 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 platf - 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 platf - } - } - -+ 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; - } - |