@@ -23,11 +23,13 @@
#include <linux/fec.h>
#include <linux/delay.h>
#include <linux/gpio.h>
+#include <linux/ahci_platform.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx53.h>
+#include <mach/ahci_sata.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -38,6 +40,8 @@
#define LOCO_FEC_PHY_RST IMX_GPIO_NR(7, 6)
+static struct clk *sata_clk, *sata_ref_clk;
+
static iomux_v3_cfg_t mx53_loco_pads[] = {
/* FEC */
MX53_PAD_FEC_MDC__FEC_MDC,
@@ -203,6 +207,77 @@ static const struct imxi2c_platform_data mx53_loco_i2c_data __initconst = {
.bitrate = 100000,
};
+/* HW Initialization, if return 0, initialization is successful. */
+static int mx53_loco_sata_init(struct device *dev, void __iomem *addr)
+{
+ int ret = 0;
+ struct clk *clk;
+
+ sata_clk = clk_get(dev, NULL);
+ if (IS_ERR(sata_clk)) {
+ dev_err(dev, "no sata clock.\n");
+ return PTR_ERR(sata_clk);
+ }
+ ret = clk_enable(sata_clk);
+ if (ret) {
+ dev_err(dev, "can't enable sata clock.\n");
+ clk_put(sata_clk);
+ return ret;
+ }
+
+ /* FSL IMX AHCI SATA uses the internal usb phy1 clk on loco */
+ sata_ref_clk = clk_get(NULL, "usb_phy1");
+ if (IS_ERR(sata_ref_clk)) {
+ dev_err(dev, "no sata ref clock.\n");
+ ret = PTR_ERR(sata_ref_clk);
+ goto release_sata_clk;
+ }
+ ret = clk_enable(sata_ref_clk);
+ if (ret) {
+ dev_err(dev, "can't enable sata ref clock.\n");
+ clk_put(sata_ref_clk);
+ goto release_sata_clk;
+ }
+
+ /* Get the AHB clock rate, and configure the TIMER1MS reg later */
+ clk = clk_get(NULL, "ahb");
+ if (IS_ERR(clk)) {
+ dev_err(dev, "no ahb clock.\n");
+ ret = PTR_ERR(clk);
+ goto release_sata_ref_clk;
+ }
+
+ sata_init(addr, clk);
+
+ clk = NULL;
+ return ret;
+
+release_sata_ref_clk:
+ clk_disable(sata_ref_clk);
+ clk_put(sata_ref_clk);
+
+release_sata_clk:
+ clk_disable(sata_clk);
+ clk_put(sata_clk);
+
+ clk = NULL;
+ return ret;
+}
+
+static void sata_exit(struct device *dev)
+{
+ clk_disable(sata_ref_clk);
+ clk_put(sata_ref_clk);
+
+ clk_disable(sata_clk);
+ clk_put(sata_clk);
+}
+
+static struct ahci_platform_data sata_data = {
+ .init = mx53_loco_sata_init,
+ .exit = sata_exit,
+};
+
static void __init mx53_loco_board_init(void)
{
mxc_iomux_v3_setup_multiple_pads(mx53_loco_pads,
@@ -215,6 +290,7 @@ static void __init mx53_loco_board_init(void)
imx53_add_imx_i2c(1, &mx53_loco_i2c_data);
imx53_add_sdhci_esdhc_imx(0, NULL);
imx53_add_sdhci_esdhc_imx(2, NULL);
+ imx53_add_ahci_imx(0, &sata_data);
}
static void __init mx53_loco_timer_init(void)
Signed-off-by: Richard Zhu <Hong-Xing.Zhu@freescale.com> --- arch/arm/mach-mx5/board-mx53_loco.c | 76 +++++++++++++++++++++++++++++++++++ 1 files changed, 76 insertions(+), 0 deletions(-)