From: Neil Armstrong <neil.armstrong@linaro.org>
Date: Thu, 20 Nov 2025 08:12:57 +0000 (+0100)
Subject: ufs: qcom: vote for interconnect bandwidth on probe
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1461a0f538152093c87b33022b629898294cff1;p=thirdparty%2Fu-boot.git

ufs: qcom: vote for interconnect bandwidth on probe

Add Interconnect voting on the UFS probe to ask for the largest
bandwidth possible.

Link: https://patch.msgid.link/20251120-topic-interconnect-next-v5-6-e8a82720da5d@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---

diff --git a/drivers/ufs/ufs-qcom.c b/drivers/ufs/ufs-qcom.c
index 9f0a6940d98..ee43958d5d8 100644
--- a/drivers/ufs/ufs-qcom.c
+++ b/drivers/ufs/ufs-qcom.c
@@ -16,6 +16,7 @@
 #include <generic-phy.h>
 #include <ufs.h>
 #include <asm/gpio.h>
+#include <interconnect.h>
 
 #include <linux/bitops.h>
 #include <linux/delay.h>
@@ -26,6 +27,9 @@
 
 #define ceil(freq, div) ((freq) % (div) == 0 ? ((freq) / (div)) : ((freq) / (div) + 1))
 
+#define UFS_DDR_MAX_BANDWIDTH	7643136
+#define UFS_CPU_MAX_BANDWIDTH	819200
+
 static void ufs_qcom_dev_ref_clk_ctrl(struct ufs_hba *hba, bool enable);
 
 static int ufs_qcom_enable_clks(struct ufs_qcom_priv *priv)
@@ -625,8 +629,17 @@ static struct ufs_hba_ops ufs_qcom_hba_ops = {
 static int ufs_qcom_probe(struct udevice *dev)
 {
 	struct ufs_qcom_priv *priv = dev_get_priv(dev);
+	struct icc_path *path;
 	int ret;
 
+	path = of_icc_get(dev, "ufs-ddr");
+	if (!IS_ERR(path))
+		icc_set_bw(path, 0, UFS_DDR_MAX_BANDWIDTH);
+
+	path = of_icc_get(dev, "cpu-ufs");
+	if (!IS_ERR(path))
+		icc_set_bw(path, 0, UFS_CPU_MAX_BANDWIDTH);
+
 	/* get resets */
 	ret = reset_get_by_name(dev, "rst", &priv->core_reset);
 	if (ret) {