| Message ID | 1450736720-8908-5-git-send-email-psidhu@gateworks.com |
|---|---|
| State | Not Applicable |
| Headers | show |
This patch isn't really applicable as we're still trying to clear this with mainline. I'll mark as "Not Applicable" in patchwork. Removal of this patch has no bearing on applying other patches as it's numbered last. - Pushpal On Mon, Dec 21, 2015 at 2:25 PM, Pushpal Sidhu <psidhu@gateworks.com> wrote: > Disable pcie-gen2 in this kernel as the products meant to run it do not fall > within specification for it. Instead, leave only Gen1 enabled. > > Signed-off-by: Tim Harvey <tharvey@gateworks.com> > Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com> > --- > .../linux/imx6/patches-4.3/210-disable_gen2.patch | 30 ++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > create mode 100644 target/linux/imx6/patches-4.3/210-disable_gen2.patch > > diff --git a/target/linux/imx6/patches-4.3/210-disable_gen2.patch b/target/linux/imx6/patches-4.3/210-disable_gen2.patch > new file mode 100644 > index 0000000..8b3a010 > --- /dev/null > +++ b/target/linux/imx6/patches-4.3/210-disable_gen2.patch > @@ -0,0 +1,30 @@ > +Index: linux-4.3/drivers/pci/host/pci-imx6.c > +=================================================================== > +--- linux-4.3.orig/drivers/pci/host/pci-imx6.c 2015-11-01 16:05:25.000000000 -0800 > ++++ linux-4.3/drivers/pci/host/pci-imx6.c 2015-12-18 10:39:45.015158318 -0800 > +@@ -392,12 +392,15 @@ > + if (ret) > + return ret; > + > ++#if 0 /* Disable Gen2 */ > + /* Allow Gen2 mode after the link is up. */ > + tmp = readl(pp->dbi_base + PCIE_RC_LCR); > + tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; > + tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN2; > + writel(tmp, pp->dbi_base + PCIE_RC_LCR); > +- > ++#else > ++ dev_info(pp->dev, "Link: Gen2 disabled\n"); > ++#endif > + /* > + * Start Directed Speed Change so the best possible speed both link > + * partners support can be negotiated. > +@@ -420,7 +423,7 @@ > + } > + > + tmp = readl(pp->dbi_base + PCIE_RC_LCSR); > +- dev_dbg(pp->dev, "Link up, Gen=%i\n", (tmp >> 16) & 0xf); > ++ dev_info(pp->dev, "Link up, Gen=%i\n", (tmp >> 16) & 0xf); > + return 0; > + } > + > -- > 2.6.4 >
diff --git a/target/linux/imx6/patches-4.3/210-disable_gen2.patch b/target/linux/imx6/patches-4.3/210-disable_gen2.patch new file mode 100644 index 0000000..8b3a010 --- /dev/null +++ b/target/linux/imx6/patches-4.3/210-disable_gen2.patch @@ -0,0 +1,30 @@ +Index: linux-4.3/drivers/pci/host/pci-imx6.c +=================================================================== +--- linux-4.3.orig/drivers/pci/host/pci-imx6.c 2015-11-01 16:05:25.000000000 -0800 ++++ linux-4.3/drivers/pci/host/pci-imx6.c 2015-12-18 10:39:45.015158318 -0800 +@@ -392,12 +392,15 @@ + if (ret) + return ret; + ++#if 0 /* Disable Gen2 */ + /* Allow Gen2 mode after the link is up. */ + tmp = readl(pp->dbi_base + PCIE_RC_LCR); + tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; + tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN2; + writel(tmp, pp->dbi_base + PCIE_RC_LCR); +- ++#else ++ dev_info(pp->dev, "Link: Gen2 disabled\n"); ++#endif + /* + * Start Directed Speed Change so the best possible speed both link + * partners support can be negotiated. +@@ -420,7 +423,7 @@ + } + + tmp = readl(pp->dbi_base + PCIE_RC_LCSR); +- dev_dbg(pp->dev, "Link up, Gen=%i\n", (tmp >> 16) & 0xf); ++ dev_info(pp->dev, "Link up, Gen=%i\n", (tmp >> 16) & 0xf); + return 0; + } +