diff options
author | Tom Rini <trini@konsulko.com> | 2018-03-25 12:00:00 -0400 |
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committer | Tom Rini <trini@konsulko.com> | 2018-03-25 12:00:00 -0400 |
commit | 89a650e0ffb89faaea1b9e6ad8cf2b38203435f2 (patch) | |
tree | 4827f512e3c1e6f2887133bbb9cb3ee9497ba603 /drivers/clk/clk_zynqmp.c | |
parent | 423effc04a195ce6a464eadadfa7f765bf786889 (diff) | |
parent | 8ae3d0b50cd22aebcd87022dc357d1cf0f3a879b (diff) |
Merge tag 'xilinx-for-v2018.05' of git://git.denx.de/u-boot-microblaze
Xilinx changes for v2018.05
- Fix mkimage recognition
- Update all my fragments
ZynqMP:
- Use clk driver
- Support loading elfs in el1
- Various DTS and defconfig changes
- Enable newer pmufw versions
- Support more clocks
- Remove ep108
- Secure image support
- Fix memtest setup
Zynq:
- Enabling watchdog driver
- Support more clocks
- defconfig changes
fpga:
- Simplify error path
net:
- GMII case update
Diffstat (limited to 'drivers/clk/clk_zynqmp.c')
-rw-r--r-- | drivers/clk/clk_zynqmp.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/clk/clk_zynqmp.c b/drivers/clk/clk_zynqmp.c index bcc62904f1..4ef8662af5 100644 --- a/drivers/clk/clk_zynqmp.c +++ b/drivers/clk/clk_zynqmp.c @@ -226,6 +226,18 @@ static u32 zynqmp_clk_get_register(enum zynqmp_clk id) return CRL_APB_CAN0_REF_CTRL; case can1_ref: return CRL_APB_CAN1_REF_CTRL; + case pl0: + return CRL_APB_PL0_REF_CTRL; + case pl1: + return CRL_APB_PL1_REF_CTRL; + case pl2: + return CRL_APB_PL2_REF_CTRL; + case pl3: + return CRL_APB_PL3_REF_CTRL; + case wdt: + return CRF_APB_TOPSW_LSBUS_CTRL; + case iopll_to_fpd: + return CRL_APB_IOPLL_TO_FPD_CTRL; default: debug("Invalid clk id%d\n", id); } @@ -278,6 +290,22 @@ static enum zynqmp_clk zynqmp_clk_get_peripheral_pll(u32 clk_ctrl) } } +static enum zynqmp_clk zynqmp_clk_get_wdt_pll(u32 clk_ctrl) +{ + u32 srcsel = (clk_ctrl & CLK_CTRL_SRCSEL_MASK) >> + CLK_CTRL_SRCSEL_SHIFT; + + switch (srcsel) { + case 2: + return iopll_to_fpd; + case 3: + return dpll; + case 0 ... 1: + default: + return apll; + } +} + static ulong zynqmp_clk_get_pll_src(ulong clk_ctrl, struct zynqmp_clk_priv *priv, bool is_pre_src) @@ -420,6 +448,49 @@ static ulong zynqmp_clk_get_peripheral_rate(struct zynqmp_clk_priv *priv, DIV_ROUND_CLOSEST(pllrate, div0), div1); } +static ulong zynqmp_clk_get_wdt_rate(struct zynqmp_clk_priv *priv, + enum zynqmp_clk id, bool two_divs) +{ + enum zynqmp_clk pll; + u32 clk_ctrl, div0; + u32 div1 = 1; + int ret; + ulong pllrate; + + ret = zynqmp_mmio_read(zynqmp_clk_get_register(id), &clk_ctrl); + if (ret) { + printf("%d %s mio read fail\n", __LINE__, __func__); + return -EIO; + } + + div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + if (!div0) + div0 = 1; + + pll = zynqmp_clk_get_wdt_pll(clk_ctrl); + if (two_divs) { + ret = zynqmp_mmio_read(zynqmp_clk_get_register(pll), &clk_ctrl); + if (ret) { + printf("%d %s mio read fail\n", __LINE__, __func__); + return -EIO; + } + div1 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + if (!div1) + div1 = 1; + } + + if (pll == iopll_to_fpd) + pll = iopll; + + pllrate = zynqmp_clk_get_pll_rate(priv, pll); + if (IS_ERR_VALUE(pllrate)) + return pllrate; + + return + DIV_ROUND_CLOSEST( + DIV_ROUND_CLOSEST(pllrate, div0), div1); +} + static unsigned long zynqmp_clk_calc_peripheral_two_divs(ulong rate, ulong pll_rate, u32 *div0, u32 *div1) @@ -510,8 +581,12 @@ static ulong zynqmp_clk_get_rate(struct clk *clk) return zynqmp_clk_get_ddr_rate(priv); case gem0_ref ... gem3_ref: case qspi_ref ... can1_ref: + case pl0 ... pl3: two_divs = true; return zynqmp_clk_get_peripheral_rate(priv, id, two_divs); + case wdt: + two_divs = true; + return zynqmp_clk_get_wdt_rate(priv, id, two_divs); default: return -ENXIO; } |