tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i2c: synquacer: Deal with optional PCLK correctly

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2089884

[ Upstream commit f2990f8630531a99cad4dc5c44cb2a11ded42492 ]

ACPI boot does not provide clocks and regulators, but instead, provides
the PCLK rate directly, and enables the clock in firmware. So deal
gracefully with this.

Fixes: 55750148e559 ("i2c: synquacer: Fix an error handling path in synquacer_i2c_probe()")
Cc: stable@vger.kernel.org # v6.10+
Cc: Andi Shyti <andi.shyti@kernel.org>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Ard Biesheuvel
2024-09-12 12:46:31 +02:00
committed by Mehmet Basaran
parent f51f801412
commit 00aa757d96
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/i2c/busses/i2c-synquacer.c
+3 -2
View File
@@ -550,12 +550,13 @@ static int synquacer_i2c_probe(struct platform_device *pdev)
device_property_read_u32(&pdev->dev, "socionext,pclk-rate",
&i2c->pclkrate);
pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
pclk = devm_clk_get_optional_enabled(&pdev->dev, "pclk");
if (IS_ERR(pclk))
return dev_err_probe(&pdev->dev, PTR_ERR(pclk),
"failed to get and enable clock\n");
i2c->pclkrate = clk_get_rate(pclk);
if (pclk)
i2c->pclkrate = clk_get_rate(pclk);
if (i2c->pclkrate < SYNQUACER_I2C_MIN_CLK_RATE ||
i2c->pclkrate > SYNQUACER_I2C_MAX_CLK_RATE)