@@ -373,6 +373,14 @@ static struct clk spi1_clk = {
.flags = DA850_CLK_ASYNC3,
};
+static struct clk sata_clk = {
+ .name = "sata",
+ .parent = &pll0_sysclk2,
+ .lpsc = DA850_LPSC1_SATA,
+ .gpsc = 1,
+ .flags = PSC_FORCE,
+};
+
static struct clk_lookup da850_clks[] = {
CLK(NULL, "ref", &ref_clk),
CLK(NULL, "pll0", &pll0_clk),
@@ -419,6 +427,7 @@ static struct clk_lookup da850_clks[] = {
CLK(NULL, "usb20", &usb20_clk),
CLK("spi_davinci.0", NULL, &spi0_clk),
CLK("spi_davinci.1", NULL, &spi1_clk),
+ CLK("ahci", NULL, &sata_clk),
CLK(NULL, NULL, NULL),
};
@@ -14,6 +14,8 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/serial_8250.h>
+#include <linux/ahci_platform.h>
+#include <linux/clk.h>
#include <mach/cputype.h>
#include <mach/common.h>
@@ -834,3 +836,141 @@ int __init da8xx_register_spi(int instance, struct spi_board_info *info,
return platform_device_register(&da8xx_spi_device[instance]);
}
+
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+
+#define DA850_SATA_BASE 0x01e18000
+static struct resource da850_sata_resources[] = {
+ {
+ .start = DA850_SATA_BASE,
+ .end = DA850_SATA_BASE + 0x1fff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_DA850_SATAINT,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+/* SATA PHY Control Register offset from AHCI base */
+#define SATA_P0PHYCR_REG 0x178
+
+#define SATA_PHY_MPY(x) ((x) << 0)
+#define SATA_PHY_LB(x) ((x) << 4)
+#define SATA_PHY_LOS(x) ((x) << 6)
+#define SATA_PHY_RXINVPAIR(x) ((x) << 7)
+#define SATA_PHY_RXTERM(x) ((x) << 8)
+#define SATA_PHY_RXCDR(x) ((x) << 10)
+#define SATA_PHY_RXEQ(x) ((x) << 13)
+#define SATA_PHY_TXINVPAIR(x) ((x) << 17)
+#define SATA_PHY_TXCM(x) ((x) << 18)
+#define SATA_PHY_TXSWING(x) ((x) << 19)
+#define SATA_PHY_TXDE(x) ((x) << 22)
+#define SATA_PHY_OVERRIDE(x) ((x) << 30)
+#define SATA_PHY_ENPLL(x) ((x) << 31)
+
+static struct clk *da850_sata_clk;
+static unsigned long da850_sata_refclkpn;
+
+/* Supported DA850 SATA crystal frequencies */
+#define KHZ_TO_HZ(freq) ((freq) * 1000)
+static unsigned long da850_sata_xtal[] = {
+ KHZ_TO_HZ(300000),
+ KHZ_TO_HZ(250000),
+ 0, /* Reserved */
+ KHZ_TO_HZ(187500),
+ KHZ_TO_HZ(150000),
+ KHZ_TO_HZ(125000),
+ KHZ_TO_HZ(120000),
+ KHZ_TO_HZ(100000),
+ KHZ_TO_HZ(75000),
+ KHZ_TO_HZ(60000),
+};
+
+static int da850_sata_init(struct device *dev, void __iomem *addr)
+{
+ int i, ret;
+ unsigned int val;
+
+ da850_sata_clk = clk_get(dev, NULL);
+ if (IS_ERR(da850_sata_clk))
+ return PTR_ERR(da850_sata_clk);
+
+ ret = clk_enable(da850_sata_clk);
+ if (ret)
+ goto err0;
+
+ /* Enable SATA clock receiver */
+ val = __raw_readl(DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));
+ val &= ~BIT(0);
+ __raw_writel(val, DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));
+
+ /* Get the multiplier needed for 1.5GHz PLL output */
+ for (i = 0; i < ARRAY_SIZE(da850_sata_xtal); i++)
+ if (da850_sata_xtal[i] == da850_sata_refclkpn)
+ break;
+
+ if (i == ARRAY_SIZE(da850_sata_xtal)) {
+ ret = -EINVAL;
+ goto err1;
+ }
+
+ val = SATA_PHY_MPY(i + 1) |
+ SATA_PHY_LB(0) |
+ SATA_PHY_LOS(1) |
+ SATA_PHY_RXINVPAIR(0) |
+ SATA_PHY_RXTERM(0) |
+ SATA_PHY_RXCDR(4) |
+ SATA_PHY_RXEQ(1) |
+ SATA_PHY_TXINVPAIR(0) |
+ SATA_PHY_TXCM(0) |
+ SATA_PHY_TXSWING(3) |
+ SATA_PHY_TXDE(0) |
+ SATA_PHY_OVERRIDE(0) |
+ SATA_PHY_ENPLL(1);
+
+ __raw_writel(val, addr + SATA_P0PHYCR_REG);
+
+ return 0;
+
+err1:
+ clk_disable(da850_sata_clk);
+err0:
+ clk_put(da850_sata_clk);
+ return ret;
+}
+
+static void da850_sata_exit(struct device *dev)
+{
+ clk_disable(da850_sata_clk);
+ clk_put(da850_sata_clk);
+}
+
+static struct ahci_platform_data da850_sata_pdata = {
+ .init = da850_sata_init,
+ .exit = da850_sata_exit,
+};
+
+static u64 da850_sata_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device da850_sata_device = {
+ .name = "ahci",
+ .id = -1,
+ .dev = {
+ .platform_data = &da850_sata_pdata,
+ .dma_mask = &da850_sata_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(da850_sata_resources),
+ .resource = da850_sata_resources,
+};
+
+int __init da850_register_sata(unsigned long refclkpn)
+{
+ da850_sata_refclkpn = refclkpn;
+ if (!da850_sata_refclkpn)
+ return -EINVAL;
+
+ return platform_device_register(&da850_sata_device);
+}
+#endif
@@ -57,6 +57,7 @@ extern unsigned int da850_max_speed;
#define DA8XX_SYSCFG1_BASE (IO_PHYS + 0x22C000)
#define DA8XX_SYSCFG1_VIRT(x) (da8xx_syscfg1_base + (x))
#define DA8XX_DEEPSLEEP_REG 0x8
+#define DA8XX_PWRDN_REG 0x18
#define DA8XX_PSC0_BASE 0x01c10000
#define DA8XX_PLL0_BASE 0x01c11000
@@ -93,6 +94,7 @@ int da850_register_cpufreq(char *async_clk);
int da8xx_register_cpuidle(void);
void __iomem * __init da8xx_get_mem_ctlr(void);
int da850_register_pm(struct platform_device *pdev);
+int __init da850_register_sata(unsigned long refclkpn);
extern struct platform_device da8xx_serial_device;
extern struct emac_platform_data da8xx_emac_pdata;