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35 lines
1023 B
Diff
35 lines
1023 B
Diff
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From 8fde85b609273f8389178d4c0d066390a0e0773d Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Sun, 30 Oct 2022 14:56:10 -0500
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Subject: [PATCH 21/90] serial: ns16550: Enable clocks during probe
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If the UART bus or baud clock has a gate, it must be enabled before the
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UART can be used.
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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---
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drivers/serial/ns16550.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- a/drivers/serial/ns16550.c
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+++ b/drivers/serial/ns16550.c
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@@ -506,6 +506,7 @@ int ns16550_serial_probe(struct udevice
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struct ns16550_plat *plat = dev_get_plat(dev);
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struct ns16550 *const com_port = dev_get_priv(dev);
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struct reset_ctl_bulk reset_bulk;
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+ struct clk_bulk clk_bulk;
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fdt_addr_t addr;
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int ret;
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@@ -524,6 +525,10 @@ int ns16550_serial_probe(struct udevice
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if (!ret)
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reset_deassert_bulk(&reset_bulk);
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+ ret = clk_get_bulk(dev, &clk_bulk);
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+ if (!ret)
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+ clk_enable_bulk(&clk_bulk);
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+
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com_port->plat = dev_get_plat(dev);
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ns16550_init(com_port, -1);
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