Commit b015b37e authored by Hou Zhiqiang's avatar Hou Zhiqiang Committed by Bjorn Helgaas
Browse files

PCI: artpec6: Stop enabling writes to DBI read-only registers 



Previously we enabled writes to the DBI read-only registers so the Class
Code fix in dw_pcie_setup_rc() would work.  But now dw_pcie_setup_rc()
enables write permission itself, so we don't need to do it here.

Stop enabling writes to the DBI read-only registers.

Signed-off-by: default avatarHou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarRoy Zang <tie-fei.zang@freescale.com>
parent c3f90939

drivers/pci/dwc/pcie-artpec6.c

+0 −6
Original line number Diff line number Diff line
@@ -141,12 +141,6 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) 
	artpec6_pcie_writel(artpec6_pcie, PCIECFG, val);

	usleep_range(100, 200);



	/*

	 * Enable writing to config regs. This is required as the Synopsys

	 * driver changes the class code. That register needs DBI write enable.

	 */

	dw_pcie_writel_dbi(pci, MISC_CONTROL_1_OFF, DBI_RO_WR_EN);



	/* setup root complex */

	dw_pcie_setup_rc(pp);