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phy: ti-pipe3: Add SATA DPLL support 

USB and SATA DPLLs need different settings. Provide
the SATA DPLL settings and use the proper DPLL settings
based on device tree node's compatible_id.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Roger Quadros 2014-03-07 11:43:39 +05:30 committed by Kishon Vijay Abraham I
parent 1562864f0f
commit 61f5467477
1 changed files with 55 additions and 21 deletions
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76
drivers/phy/phy-ti-pipe3.c
View File

@ -66,6 +66,11 @@ struct pipe3_dpll_params {
u32 mf;
};
struct pipe3_dpll_map {
unsigned long rate;
struct pipe3_dpll_params params;
};
struct ti_pipe3 {
void __iomem *pll_ctrl_base;
struct device *dev;
@ -73,20 +78,27 @@ struct ti_pipe3 {
struct clk *wkupclk;
struct clk *sys_clk;
struct clk *refclk;
struct pipe3_dpll_map *dpll_map;
};
struct pipe3_dpll_map {
unsigned long rate;
struct pipe3_dpll_params params;
};
static struct pipe3_dpll_map dpll_map[] = {
static struct pipe3_dpll_map dpll_map_usb[] = {
{12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */
{16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */
{19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */
{20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */
{26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */
{38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */
{ }, /* Terminator */
};
static struct pipe3_dpll_map dpll_map_sata[] = {
{12000000, {1000, 7, 4, 6, 0} }, /* 12 MHz */
{16800000, {714, 7, 4, 6, 0} }, /* 16.8 MHz */
{19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */
{20000000, {600, 7, 4, 6, 0} }, /* 20 MHz */
{26000000, {461, 7, 4, 6, 0} }, /* 26 MHz */
{38400000, {312, 7, 4, 6, 0} }, /* 38.4 MHz */
{ }, /* Terminator */
};
static inline u32 ti_pipe3_readl(void __iomem *addr, unsigned offset)
@ -100,15 +112,20 @@ static inline void ti_pipe3_writel(void __iomem *addr, unsigned offset,
__raw_writel(data, addr + offset);
}
static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(unsigned long rate)
static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(struct ti_pipe3 *phy)
{
int i;
unsigned long rate;
struct pipe3_dpll_map *dpll_map = phy->dpll_map;
for (i = 0; i < ARRAY_SIZE(dpll_map); i++) {
if (rate == dpll_map[i].rate)
return &dpll_map[i].params;
rate = clk_get_rate(phy->sys_clk);
for (; dpll_map->rate; dpll_map++) {
if (rate == dpll_map->rate)
return &dpll_map->params;
}
dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate);
return NULL;
}
@ -182,16 +199,11 @@ static void ti_pipe3_dpll_relock(struct ti_pipe3 *phy)
static int ti_pipe3_dpll_lock(struct ti_pipe3 *phy)
{
u32 val;
unsigned long rate;
struct pipe3_dpll_params *dpll_params;
rate = clk_get_rate(phy->sys_clk);
dpll_params = ti_pipe3_get_dpll_params(rate);
if (!dpll_params) {
dev_err(phy->dev,
"No DPLL configuration for %lu Hz SYS CLK\n", rate);
dpll_params = ti_pipe3_get_dpll_params(phy);
if (!dpll_params)
return -EINVAL;
}
val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
val &= ~PLL_REGN_MASK;
@ -244,6 +256,10 @@ static struct phy_ops ops = {
.owner = THIS_MODULE,
};
#ifdef CONFIG_OF
static const struct of_device_id ti_pipe3_id_table[];
#endif
static int ti_pipe3_probe(struct platform_device *pdev)
{
struct ti_pipe3 *phy;
@ -253,8 +269,10 @@ static int ti_pipe3_probe(struct platform_device *pdev)
struct device_node *node = pdev->dev.of_node;
struct device_node *control_node;
struct platform_device *control_pdev;
const struct of_device_id *match;
if (!node)
match = of_match_device(of_match_ptr(ti_pipe3_id_table), &pdev->dev);
if (!match)
return -EINVAL;
phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
@ -263,6 +281,12 @@ static int ti_pipe3_probe(struct platform_device *pdev)
return -ENOMEM;
}
phy->dpll_map = (struct pipe3_dpll_map *)match->data;
if (!phy->dpll_map) {
dev_err(&pdev->dev, "no DPLL data\n");
return -EINVAL;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl");
phy->pll_ctrl_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(phy->pll_ctrl_base))
@ -388,8 +412,18 @@ static const struct dev_pm_ops ti_pipe3_pm_ops = {
#ifdef CONFIG_OF
static const struct of_device_id ti_pipe3_id_table[] = {
{ .compatible = "ti,phy-usb3" },
{ .compatible = "ti,omap-usb3" },
{
.compatible = "ti,phy-usb3",
.data = dpll_map_usb,
},
{
.compatible = "ti,omap-usb3",
.data = dpll_map_usb,
},
{
.compatible = "ti,phy-pipe3-sata",
.data = dpll_map_sata,
},
{}
};
MODULE_DEVICE_TABLE(of, ti_pipe3_id_table);