[PATCH v4 08/39] serial: msm: fix clock handling and pinctrl
Caleb Connolly
caleb.connolly at linaro.org
Thu Feb 15 21:52:26 CET 2024
Use the modern helpers to fetch the clock and use the correct property
("clocks" instead of "clock"). Drop the call to pinctrl_select_state()
as no boards have a "uart" pinctrl state and this prints confusing
errors.
Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
---
arch/arm/dts/dragonboard410c.dts | 3 ++-
arch/arm/dts/dragonboard820c.dts | 3 ++-
drivers/serial/serial_msm.c | 25 +++++--------------------
3 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/arch/arm/dts/dragonboard410c.dts b/arch/arm/dts/dragonboard410c.dts
index 02c824d0226c..c395e6cc0427 100644
--- a/arch/arm/dts/dragonboard410c.dts
+++ b/arch/arm/dts/dragonboard410c.dts
@@ -84,7 +84,8 @@
serial at 78b0000 {
compatible = "qcom,msm-uartdm-v1.4";
reg = <0x78b0000 0x200>;
- clock = <&clkc 4>;
+ clocks = <&clkc 4>;
+ clock-names = "core";
pinctrl-names = "uart";
pinctrl-0 = <&blsp1_uart>;
};
diff --git a/arch/arm/dts/dragonboard820c.dts b/arch/arm/dts/dragonboard820c.dts
index 146a0af8aafe..86b7f83d36d6 100644
--- a/arch/arm/dts/dragonboard820c.dts
+++ b/arch/arm/dts/dragonboard820c.dts
@@ -78,7 +78,8 @@
blsp2_uart2: serial at 75b0000 {
compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
reg = <0x75b0000 0x1000>;
- clock = <&gcc 4>;
+ clocks = <&gcc 4>;
+ clock-names = "core";
pinctrl-names = "uart";
pinctrl-0 = <&blsp8_uart>;
};
diff --git a/drivers/serial/serial_msm.c b/drivers/serial/serial_msm.c
index 44b93bd7ff21..ac4280c6c4c2 100644
--- a/drivers/serial/serial_msm.c
+++ b/drivers/serial/serial_msm.c
@@ -160,29 +160,14 @@ static int msm_uart_clk_init(struct udevice *dev)
{
uint clk_rate = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
"clock-frequency", 115200);
- uint clkd[2]; /* clk_id and clk_no */
- int clk_offset;
- struct udevice *clk_dev;
struct clk clk;
int ret;
- ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(dev), "clock",
- clkd, 2);
- if (ret)
- return ret;
-
- clk_offset = fdt_node_offset_by_phandle(gd->fdt_blob, clkd[0]);
- if (clk_offset < 0)
- return clk_offset;
-
- ret = uclass_get_device_by_of_offset(UCLASS_CLK, clk_offset, &clk_dev);
- if (ret)
- return ret;
-
- clk.id = clkd[1];
- ret = clk_request(clk_dev, &clk);
- if (ret < 0)
+ ret = clk_get_by_name(dev, "core", &clk);
+ if (ret < 0) {
+ pr_warn("%s: Failed to get clock: %d\n", __func__, ret);
return ret;
+ }
ret = clk_set_rate(&clk, clk_rate);
if (ret < 0)
@@ -218,7 +203,6 @@ static int msm_serial_probe(struct udevice *dev)
if (ret)
return ret;
- pinctrl_select_state(dev, "uart");
uart_dm_init(priv);
return 0;
@@ -251,6 +235,7 @@ U_BOOT_DRIVER(serial_msm) = {
.priv_auto = sizeof(struct msm_serial_data),
.probe = msm_serial_probe,
.ops = &msm_serial_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
#ifdef CONFIG_DEBUG_UART_MSM
--
2.43.1
More information about the U-Boot
mailing list