diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0128-usb-xhci-mtk-check-clock-stability-of-U3_MAC.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0128-usb-xhci-mtk-check-clock-stability-of-U3_MAC.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0128-usb-xhci-mtk-check-clock-stability-of-U3_MAC.patch b/target/linux/mediatek/patches-4.14/0128-usb-xhci-mtk-check-clock-stability-of-U3_MAC.patch new file mode 100644 index 0000000000..d046574216 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0128-usb-xhci-mtk-check-clock-stability-of-U3_MAC.patch @@ -0,0 +1,41 @@ +From 4422c4efeed2a8b9fa745c6e529623d89c0be75e Mon Sep 17 00:00:00 2001 +From: Chunfeng Yun <chunfeng.yun@mediatek.com> +Date: Fri, 13 Oct 2017 16:26:35 +0800 +Subject: [PATCH 128/224] usb: xhci-mtk: check clock stability of U3_MAC + +This is useful to find out the root cause when the Super Speed doesn't +work. Such as when the T-PHY is switched to PCIe or SATA, and affects +Super Speed function, the check will fail. + +Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> +Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/usb/host/xhci-mtk.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c +index 9502ca408f01..7a92bb782e5c 100644 +--- a/drivers/usb/host/xhci-mtk.c ++++ b/drivers/usb/host/xhci-mtk.c +@@ -43,6 +43,7 @@ + + /* ip_pw_sts1 register */ + #define STS1_IP_SLEEP_STS BIT(30) ++#define STS1_U3_MAC_RST BIT(16) + #define STS1_XHCI_RST BIT(11) + #define STS1_SYS125_RST BIT(10) + #define STS1_REF_RST BIT(8) +@@ -125,6 +126,9 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk) + check_val = STS1_SYSPLL_STABLE | STS1_REF_RST | + STS1_SYS125_RST | STS1_XHCI_RST; + ++ if (mtk->num_u3_ports) ++ check_val |= STS1_U3_MAC_RST; ++ + ret = readl_poll_timeout(&ippc->ip_pw_sts1, value, + (check_val == (value & check_val)), 100, 20000); + if (ret) { +-- +2.11.0 + |