diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2014-08-25 14:26:45 -0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-09-09 17:24:49 +0200 |
| commit | 1b8ad74a6f8cea55a727dc4b399baac46d0daef1 (patch) | |
| tree | 0553356fd461dd173b74c9108577b60c997161af /arch | |
| parent | ac17dcf653138cd0e521142fdfdfdff8027d3a04 (diff) | |
pcie_imx: Add mx6solox support
Let PCI on mx6solox also be supported.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 17 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/iomux.h | 9 |
2 files changed, 22 insertions, 4 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index a861e655ea..52136f7a22 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -599,6 +599,7 @@ int enable_pcie_clock(void) struct anatop_regs *anatop_regs = (struct anatop_regs *)ANATOP_BASE_ADDR; struct mxc_ccm_reg *ccm_regs = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + u32 lvds1_clk_sel; /* * Here be dragons! @@ -608,17 +609,25 @@ int enable_pcie_clock(void) * marked as ANATOP_MISC1 is actually documented in the PMU section * of the datasheet as PMU_MISC1. * - * Switch LVDS clock source to SATA (0xb), disable clock INPUT and - * enable clock OUTPUT. This is important for PCI express link that - * is clocked from the i.MX6. + * Switch LVDS clock source to SATA (0xb) on mx6q/dl or PCI (0xa) on + * mx6sx, disable clock INPUT and enable clock OUTPUT. This is important + * for PCI express link that is clocked from the i.MX6. */ #define ANADIG_ANA_MISC1_LVDSCLK1_IBEN (1 << 12) #define ANADIG_ANA_MISC1_LVDSCLK1_OBEN (1 << 10) #define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK 0x0000001F +#define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF 0xa +#define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF 0xb + + if (is_cpu_type(MXC_CPU_MX6SX)) + lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF; + else + lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF; + clrsetbits_le32(&anatop_regs->ana_misc1, ANADIG_ANA_MISC1_LVDSCLK1_IBEN | ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK, - ANADIG_ANA_MISC1_LVDSCLK1_OBEN | 0xb); + ANADIG_ANA_MISC1_LVDSCLK1_OBEN | lvds1_clk_sel); /* PCIe reference clock sourced from AXI. */ clrbits_le32(&ccm_regs->cbcmr, MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL); diff --git a/arch/arm/include/asm/arch-mx6/iomux.h b/arch/arm/include/asm/arch-mx6/iomux.h index f54db6944d..9b3a91f076 100644 --- a/arch/arm/include/asm/arch-mx6/iomux.h +++ b/arch/arm/include/asm/arch-mx6/iomux.h @@ -19,6 +19,12 @@ #define IOMUXC_GPR1_TEST_POWERDOWN (1 << 18) /* + * IOMUXC_GPR5 bit fields + */ +#define IOMUXC_GPR5_PCIE_BTNRST (1 << 19) +#define IOMUXC_GPR5_PCIE_PERST (1 << 18) + +/* * IOMUXC_GPR8 bit fields */ #define IOMUXC_GPR8_PCS_TX_DEEMPH_GEN1_MASK (0x3f << 0) @@ -35,12 +41,15 @@ /* * IOMUXC_GPR12 bit fields */ +#define IOMUXC_GPR12_RX_EQ_2 (0x2 << 0) +#define IOMUXC_GPR12_RX_EQ_MASK (0x7 << 0) #define IOMUXC_GPR12_LOS_LEVEL_9 (0x9 << 4) #define IOMUXC_GPR12_LOS_LEVEL_MASK (0x1f << 4) #define IOMUXC_GPR12_APPS_LTSSM_ENABLE (1 << 10) #define IOMUXC_GPR12_DEVICE_TYPE_EP (0x0 << 12) #define IOMUXC_GPR12_DEVICE_TYPE_RC (0x4 << 12) #define IOMUXC_GPR12_DEVICE_TYPE_MASK (0xf << 12) +#define IOMUXC_GPR12_TEST_POWERDOWN (1 << 30) /* * IOMUXC_GPR13 bit fields |