From: 黄涛 <huangtao@rock-chips.com>
Date: Mon, 3 Sep 2012 04:15:21 +0000 (+0800)
Subject: rk3066b: common: init io drive strength
X-Git-Tag: firefly_0821_release~8754
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d97d9b4ee3c3196f44d6fc9a9e776679dd68ce2f;p=firefly-linux-kernel-4.4.55.git

rk3066b: common: init io drive strength
---

diff --git a/arch/arm/mach-rk30/common.c b/arch/arm/mach-rk30/common.c
index 4c9d7f7bf9df..9e47f426d484 100755
--- a/arch/arm/mach-rk30/common.c
+++ b/arch/arm/mach-rk30/common.c
@@ -40,6 +40,13 @@ static void __init rk30_cpu_axi_init(void)
 	dsb();
 }
 
+static void __init rk30_io_drive_strength_init(void)
+{
+#if defined(CONFIG_ARCH_RK3066B)
+	writel_relaxed(0x11001100, RK30_GRF_BASE + GRF_IO_CON4);
+#endif
+}
+
 #define L2_LY_SP_OFF (0)
 #define L2_LY_SP_MSK (0x7)
 
@@ -122,6 +129,7 @@ void __init rk30_map_io(void)
 	rk30_map_common_io();
 	rk29_setup_early_printk();
 	rk30_cpu_axi_init();
+	rk30_io_drive_strength_init();
 	rk29_sram_init();
 	board_clock_init();
 	rk30_l2_cache_init();
diff --git a/arch/arm/mach-rk30/include/mach/iomux-rk3066b.h b/arch/arm/mach-rk30/include/mach/iomux-rk3066b.h
index 340481d58e24..483c7434d04b 100644
--- a/arch/arm/mach-rk30/include/mach/iomux-rk3066b.h
+++ b/arch/arm/mach-rk30/include/mach/iomux-rk3066b.h
@@ -370,6 +370,11 @@
 #define      GRF_DMAC2_CON1                       0x00c0
 #define      GRF_DMAC2_CON2                       0x00c4
 #define      GRF_DMAC2_CON3                       0x00c8
+#define      GRF_IO_CON0                          0x00f4
+#define      GRF_IO_CON1                          0x00f8
+#define      GRF_IO_CON2                          0x00fc
+#define      GRF_IO_CON3                          0x0100
+#define      GRF_IO_CON4                          0x0104
 #define      GRF_UOC0_CON0                        0x010c
 #define      GRF_UOC0_CON1                        0x0110
 #define      GRF_UOC0_CON2                        0x0114