From: 张晴 <zhangqing@rock-chips.com>
Date: Fri, 22 Jul 2011 08:55:58 +0000 (-0700)
Subject: a22 and rk29 phonesdk:32K Frequency switch time cut short
X-Git-Tag: firefly_0821_release~10089^2~11
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3fcb59165973951d61c8ff4cbeb1da4ed1abb3b4;p=firefly-linux-kernel-4.4.55.git

a22 and rk29 phonesdk:32K Frequency switch time cut short
---

diff --git a/arch/arm/mach-rk29/spi_sram.c b/arch/arm/mach-rk29/spi_sram.c
index 64246c8ec03c..9cb8299f60ff 100755
--- a/arch/arm/mach-rk29/spi_sram.c
+++ b/arch/arm/mach-rk29/spi_sram.c
@@ -588,13 +588,13 @@ void __sramfunc pm_clk_switch_32k(void)
 	asm("wfi");
 	
 	pm_gpio_out_low(RK29_PIN4_PC5);//enable 24M 
-	sram_udelay(1000,24);
+	sram_udelay(20,24);             //the system clock is 32.768K 
 	cru_writel(crumode, CRU_MODE_CON); //externel clk 24M
 
 	#ifndef CONFIG_MACH_RK29_A22
 	pm_gpio_out_low(RK29_PIN4_PC0); //enable 27M
 	#endif
-	sram_udelay(1000,27);
+	//sram_udelay(1000,27);
 	sram_printch('7');