5.15-stable review patch. If anyone has any objections, please let me know.
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From: Luca Weiss luca@lucaweiss.eu
[ Upstream commit 4641840341f37dc8231e0840ec1514b4061b4322 ]
For example MSM8974 has mx voltage rail exposed as regulator and only cx voltage rail is exposed as power domain. This power domain (cx) is attached internally in power domain and cannot be attached in this driver.
Fixes: 8750cf392394 ("remoteproc: qcom_q6v5_mss: Allow replacing regulators with power domains") Co-developed-by: Matti Lehtimäki matti.lehtimaki@gmail.com Signed-off-by: Matti Lehtimäki matti.lehtimaki@gmail.com Reviewed-by: Stephan Gerhold stephan.gerhold@linaro.org Signed-off-by: Luca Weiss luca@lucaweiss.eu Link: https://lore.kernel.org/r/20250217-msm8226-modem-v5-4-2bc74b80e0ae@lucaweiss... Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/remoteproc/qcom_q6v5_mss.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 7fe1f2c5480af..7acd60de18c8f 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -1594,6 +1594,13 @@ static int q6v5_pds_attach(struct device *dev, struct device **devs, while (pd_names[num_pds]) num_pds++;
+ /* Handle single power domain */ + if (num_pds == 1 && dev->pm_domain) { + devs[0] = dev; + pm_runtime_enable(dev); + return 1; + } + for (i = 0; i < num_pds; i++) { devs[i] = dev_pm_domain_attach_by_name(dev, pd_names[i]); if (IS_ERR_OR_NULL(devs[i])) { @@ -1614,8 +1621,15 @@ static int q6v5_pds_attach(struct device *dev, struct device **devs, static void q6v5_pds_detach(struct q6v5 *qproc, struct device **pds, size_t pd_count) { + struct device *dev = qproc->dev; int i;
+ /* Handle single power domain */ + if (pd_count == 1 && dev->pm_domain) { + pm_runtime_disable(dev); + return; + } + for (i = 0; i < pd_count; i++) dev_pm_domain_detach(pds[i], false); } @@ -2081,13 +2095,13 @@ static const struct rproc_hexagon_res msm8974_mss = { .supply = "pll", .uA = 100000, }, - {} - }, - .fallback_proxy_supply = (struct qcom_mss_reg_res[]) { { .supply = "mx", .uV = 1050000, }, + {} + }, + .fallback_proxy_supply = (struct qcom_mss_reg_res[]) { { .supply = "cx", .uA = 100000, @@ -2113,7 +2127,6 @@ static const struct rproc_hexagon_res msm8974_mss = { NULL }, .proxy_pd_names = (char*[]){ - "mx", "cx", NULL },