| Submitter | Rudolf Marek |
|---|---|
| Date | 2011-02-26 19:40:23 |
| Message ID | <4D695727.10109@assembler.cz> |
| Download | mbox | patch |
| Permalink | /patch/2709/ |
| State | Accepted |
| Commit | r6384 |
| Headers | show |
Comments
Rudolf Marek wrote: > I just found out how to take the PCIe x16 out of reset. > > Following patch fills in the callbacks for PCIe x16 resets. This board uses > GPM8,GPM9 as reset toggles. > > Signed-off-by: Rudolf Marek <r.marek@assembler.cz> Acked-by: Peter Stuge <peter@stuge.se>
Patch
Index: src/mainboard/asrock/939a785gmh/mainboard.c =================================================================== --- src/mainboard/asrock/939a785gmh/mainboard.c (revision 6381) +++ src/mainboard/asrock/939a785gmh/mainboard.c (working copy) @@ -35,12 +35,31 @@ void set_pcie_dereset(void); void set_pcie_reset(void); u8 is_dev3_present(void); + +static void pcie_rst_toggle(u8 val) { + u8 byte; + + byte = pm_ioread(0x8d); + byte &= ~(3 << 1); + pm_iowrite(0x8d, byte); + + byte = pm_ioread(0x94); + /* Output enable */ + byte &= ~(3 << 2); + /* Toggle GPM8, GPM9 */ + byte &= ~(3 << 0); + byte |= val; + pm_iowrite(0x94, byte); +} + void set_pcie_dereset() { + pcie_rst_toggle(0x3); } void set_pcie_reset() { + pcie_rst_toggle(0x0); } #if 0 /* not tested yet */
Hello, I just found out how to take the PCIe x16 out of reset. Following patch fills in the callbacks for PCIe x16 resets. This board uses GPM8,GPM9 as reset toggles. Signed-off-by: Rudolf Marek <r.marek@assembler.cz> Thanks, Rudolf