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4f74957584
This adds the patches to get fairly complete Gemini support
using kernel v4.14. It is mainly a backport of patches from
kernel v4.16 with omissions of things like graphics that require
substantial changes and will be better handled once we move
to the v4.16 kernel proper.
On top of this are some WIP patches for USB support.
Tested on Raidsonic NAS4220B and D-link DNS-313.
ChangeLog v4->v5:
- Fix ethernet single gmac usecase
- Fix USB reset (patch from Hans)
- Fix Raidsonic ethernet skew delay
- Fix kernel config (bridge, squashfs, jffs2, usb)
- Disable second usb port on Raidsonic board until fotg210_hcd is fixed
ChangeLog v3->v4:
- Make sure to use tabs rather than spaces in base-files.
- Use the dns313 image tool from the firmware-utils.
- Break out the addition of the v4.14 patches and the removal
of the v4.4 patches to separate (big) patches.
ChangeLog v2->v3:
- Update the kernel config as indicated by Hauke Martens:
- Regenerate again after rebasing using kernel_oldconfig
dropping a few optimization settings that are now generic
- Drop CFG80211 stuff (module)
- Drop CIFS stuff (module)
- Drop MAC80211 (module)
- Drop wireless drivers (module)
- Enabled OverlayFS
- Added proper DNS-313 boot image generation with the special
file header tool.
- Disable CMA in the kernel
- Enable LZMA compression of the kernel
- Consequently name the nas4220b images nas4220b
- Update preinit MAC detection script to handle also DNS-313
- Add board.d/03_hdparm to set the disk to spin down after
1 minute by default, if we have the hdparm tool installed
ChangeLog v1->v2:
- Processed config through kernel_oldconfig
- Processed patches through make target/linux/{clean,refresh} V=99
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Roman Yeryomin <roman@advem.lv>
100 lines
2.7 KiB
Diff
100 lines
2.7 KiB
Diff
From acd19633751f14607ccd76f9dfde5bde7935766c Mon Sep 17 00:00:00 2001
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From: Linus Walleij <linus.walleij@linaro.org>
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Date: Fri, 21 Apr 2017 20:46:12 +0200
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Subject: [PATCH 29/31] usb: host: fotg2: add silicon clock handling
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When used in a system with software-controller silicon clocks,
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the FOTG210 needs to grab, prepare and enable the clock.
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This is needed on for example the Cortina Gemini, where the
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platform will by default gate off the clock unless the
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peripheral (in this case the USB driver) grabs and enables
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the clock.
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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---
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drivers/usb/host/fotg210-hcd.c | 26 ++++++++++++++++++++++----
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drivers/usb/host/fotg210.h | 3 +++
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2 files changed, 25 insertions(+), 4 deletions(-)
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--- a/drivers/usb/host/fotg210-hcd.c
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+++ b/drivers/usb/host/fotg210-hcd.c
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@@ -45,6 +45,7 @@
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#include <linux/uaccess.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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+#include <linux/clk.h>
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#include <asm/byteorder.h>
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#include <asm/irq.h>
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@@ -5635,7 +5636,7 @@ static int fotg210_hcd_probe(struct plat
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hcd->regs = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(hcd->regs)) {
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retval = PTR_ERR(hcd->regs);
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- goto failed;
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+ goto failed_put_hcd;
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}
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hcd->rsrc_start = res->start;
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@@ -5645,22 +5646,35 @@ static int fotg210_hcd_probe(struct plat
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fotg210->caps = hcd->regs;
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+ /* It's OK not to supply this clock */
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+ fotg210->pclk = clk_get(dev, "PCLK");
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+ if (!IS_ERR(fotg210->pclk)) {
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+ retval = clk_prepare_enable(fotg210->pclk);
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+ if (retval) {
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+ dev_err(dev, "failed to enable PCLK\n");
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+ goto failed_dis_clk;
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+ }
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+ }
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+
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retval = fotg210_setup(hcd);
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if (retval)
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- goto failed;
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+ goto failed_dis_clk;
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fotg210_init(fotg210);
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retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
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if (retval) {
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dev_err(dev, "failed to add hcd with err %d\n", retval);
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- goto failed;
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+ goto failed_dis_clk;
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}
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device_wakeup_enable(hcd->self.controller);
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return retval;
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-failed:
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+failed_dis_clk:
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+ if (!IS_ERR(fotg210->pclk))
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+ clk_disable_unprepare(fotg210->pclk);
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+failed_put_hcd:
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usb_put_hcd(hcd);
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fail_create_hcd:
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dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
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@@ -5676,6 +5690,10 @@ static int fotg210_hcd_remove(struct pla
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{
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struct device *dev = &pdev->dev;
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struct usb_hcd *hcd = dev_get_drvdata(dev);
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+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
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+
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+ if (!IS_ERR(fotg210->pclk))
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+ clk_disable_unprepare(fotg210->pclk);
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if (!hcd)
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return 0;
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--- a/drivers/usb/host/fotg210.h
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+++ b/drivers/usb/host/fotg210.h
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@@ -182,6 +182,9 @@ struct fotg210_hcd { /* one per contro
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# define COUNT(x)
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#endif
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+ /* silicon clock */
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+ struct clk *pclk;
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+
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/* debug files */
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struct dentry *debug_dir;
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};
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