hi3516d打開ttyAMA2 ttyAMA3的方法

修改/arch/arm/match-hi3516a/core.c，添加如下代碼：

131 HIL_AMBA_DEVICE(uart0, "uart:0",  UART0,    NULL);
132 HIL_AMBA_DEVICE(uart1, "uart:1",  UART1,    NULL);
133 HIL_AMBA_DEVICE(uart2, "uart:2",  UART2,    NULL); // add by yangzheng
134 
135 static struct amba_device *amba_devs[] __initdata = {
136     &HIL_AMBADEV_NAME(uart0),
137     &HIL_AMBADEV_NAME(uart1),
138     &HIL_AMBADEV_NAME(uart2), // add by yangzheng
139 };

152 static struct clk_lookup lookups[] = {
153     {
154          /* UART0 */
155         .dev_id     = "uart:0",
156         .clk        = &uart_clk,
157     }, { /* UART1 */
158         .dev_id     = "uart:1",
159         .clk        = &uart_clk,
160     }, { /* UART2 add by yangzheng*/
161         .dev_id     = "uart:2",
162         .clk        = &uart_clk,
163     },{ /* SP804 timers */
164         .dev_id     = "sp804",
165         .clk        = &sp804_clk,
166     },
167 };

注：配置管腳複用

參考文檔：http://blog.csdn.net/olei_oleitao/article/details/7383592

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