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serial: lpuart: use ipg clk for i.MX7ULP

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To i.MX7ULP compatible lpuart, there is only ipg clk, no per clk.
So add a devtype check for i.MX7ULP.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2024-04-12 22:24:52 +08:00 committed by Fabio Estevam
parent 51cfa66f2c
commit 1e635a319d
1 changed files with 26 additions and 16 deletions
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42
drivers/serial/serial_lpuart.c
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@ -109,28 +109,35 @@ u32 __weak get_lpuart_clk(void)
}
#if CONFIG_IS_ENABLED(CLK)
static int get_lpuart_clk_rate(struct udevice *dev, u32 *clk)
static int get_lpuart_clk_rate(struct udevice *dev, u32 *clk_rate)
{
struct clk per_clk;
struct lpuart_serial_plat *plat = dev_get_plat(dev);
struct clk clk;
ulong rate;
int ret;
char *name;
ret = clk_get_by_name(dev, "per", &per_clk);
if (plat->devtype == DEV_MX7ULP)
name = "ipg";
else
name = "per";
ret = clk_get_by_name(dev, name, &clk);
if (ret) {
dev_err(dev, "Failed to get per clk: %d\n", ret);
dev_err(dev, "Failed to get clk: %d\n", ret);
return ret;
}
rate = clk_get_rate(&per_clk);
rate = clk_get_rate(&clk);
if ((long)rate <= 0) {
dev_err(dev, "Failed to get per clk rate: %ld\n", (long)rate);
dev_err(dev, "Failed to get clk rate: %ld\n", (long)rate);
return ret;
}
*clk = rate;
*clk_rate = rate;
return 0;
}
#else
static inline int get_lpuart_clk_rate(struct udevice *dev, u32 *clk)
static inline int get_lpuart_clk_rate(struct udevice *dev, u32 *clk_rate)
{ return -ENOSYS; }
#endif
@ -479,19 +486,22 @@ static int lpuart_serial_pending(struct udevice *dev, bool input)
static int lpuart_serial_probe(struct udevice *dev)
{
#if CONFIG_IS_ENABLED(CLK)
struct lpuart_serial_plat *plat = dev_get_plat(dev);
struct clk per_clk;
struct clk ipg_clk;
int ret;
ret = clk_get_by_name(dev, "per", &per_clk);
if (!ret) {
ret = clk_enable(&per_clk);
if (ret) {
dev_err(dev, "Failed to enable per clk: %d\n", ret);
return ret;
if (plat->devtype != DEV_MX7ULP) {
ret = clk_get_by_name(dev, "per", &per_clk);
if (!ret) {
ret = clk_enable(&per_clk);
if (ret) {
dev_err(dev, "Failed to enable per clk: %d\n", ret);
return ret;
}
} else {
debug("%s: Failed to get per clk: %d\n", __func__, ret);
}
} else {
debug("%s: Failed to get per clk: %d\n", __func__, ret);
}
ret = clk_get_by_name(dev, "ipg", &ipg_clk);