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26 lines
779 B
Diff
26 lines
779 B
Diff
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From 7b340aa70dbea4096f949a9ddceb169079a0603b Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 4 Apr 2024 17:03:33 +0100
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Subject: [PATCH 1003/1085] i2c: designware: Make the SDA hold time half LCNT
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In the absence of a value in Device Tree, set the SDA hold time to half
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the SCL low time.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/i2c/busses/i2c-designware-master.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/i2c/busses/i2c-designware-master.c
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+++ b/drivers/i2c/busses/i2c-designware-master.c
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@@ -194,6 +194,9 @@ static int i2c_dw_set_timings_master(str
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dev->hs_hcnt, dev->hs_lcnt);
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}
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+ if (!dev->sda_hold_time)
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+ dev->sda_hold_time = lcnt / 2;
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+
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ret = i2c_dw_set_sda_hold(dev);
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if (ret)
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return ret;
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