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PCI/pwrctrl: tc9563: Power off only the external ports in tc9563_pwrctrl_disable_port()

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TC9563 supports powering off only the external facing ports like DSP1 and
DSP2. It is not recommended to power off USP and DSP3 as they have fixed
ports/endpoint connected.

Fix tc9563_pwrctrl_disable_port() to power off only DSP1 and DSP2.

Fixes: 4c9c7be473 ("PCI: pwrctrl: Add power control driver for TC9563")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Elder <elder@riscstar.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260725-tc9563-fix-v1-3-ec4286e31331@oss.qualcomm.com
This commit is contained in:
Manivannan Sadhasivam 2026-07-25 10:59:15 +02:00 committed by Bjorn Helgaas
parent 6e5e6c2194
commit e41bbfc4c1
1 changed files with 8 additions and 2 deletions
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10
drivers/pci/pwrctrl/pci-pwrctrl-tc9563.c
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@ -241,12 +241,18 @@ static int tc9563_pwrctrl_disable_port(struct tc9563_pwrctrl *tc9563,
if (!cfg->disable_port)
return 0;
if (port == TC9563_DSP1) {
switch (port) {
case TC9563_DSP1:
seq = dsp1_pwroff_seq;
len = ARRAY_SIZE(dsp1_pwroff_seq);
} else {
break;
case TC9563_DSP2:
seq = dsp2_pwroff_seq;
len = ARRAY_SIZE(dsp2_pwroff_seq);
break;
default:
/* Only external downstream ports DSP1/DSP2 can be powered off */
return 0;
}
ret = tc9563_pwrctrl_i2c_bulk_write(tc9563->client, seq, len);