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author | Andrew Bresticker <abrestic@chromium.org> | 2013-12-18 22:41:34 -0800 |
---|---|---|
committer | Isaac Christensen <isaac.christensen@se-eng.com> | 2014-09-22 19:00:19 +0200 |
commit | 24d4f7f8defca9c68d4a96ba5cbedf5b01ca6e53 (patch) | |
tree | a38ef152b5381a72d68cef5e1860daffd1198227 /src/soc/nvidia/tegra124/clock.c | |
parent | d65e214d666269d0bd20d88ba2bc83349810c668 (diff) | |
download | coreboot-24d4f7f8defca9c68d4a96ba5cbedf5b01ca6e53.tar.xz |
tegra124/nyan: memory and display updates
tegra124: use pll_c_out1 as sclk parent
Reviewed-on: https://chromium-review.googlesource.com/180865
(cherry picked from commit 418337a5bde70df6a770222201c51bf3e8892d5f)
tegra124: take LP cluster out of reset
Reviewed-on: https://chromium-review.googlesource.com/180866
(cherry picked from commit 74cdc68ea9b29da9af313635787e82bacb9e23e3)
tegra124: norrin: display code clean up
Reviewed-on: https://chromium-review.googlesource.com/181003
(cherry picked from commit 63843ec61b3b47ffc985edcb589771591c5c9f17)
tegra124: Change the display hack to use window A
Reviewed-on: https://chromium-review.googlesource.com/182001
(cherry picked from commit ef245e42eb17b2eb0e8712f252353a95ee6fc01a)
tegra124: norrin: Initialize frame buffer
Reviewed-on: https://chromium-review.googlesource.com/182090
(cherry picked from commit b7c1d1b3c9519cbbe1615737aed4c4c0efed2167)
nyan: do not enable pull-ups on SPI1 (EC) data pins
Reviewed-on: https://chromium-review.googlesource.com/181063
(cherry picked from commit 2f55188501ebcae9e01b12831f152d4520c7047c)
tegra124: Add source for the LP0 resume blob.
Reviewed-on: https://chromium-review.googlesource.com/183152
(cherry picked from commit a00d099bf710c297320d7edff7f7c608283d1b0b)
tegra124: Revise Memory Controller registers structure definition.
Reviewed-on: https://chromium-review.googlesource.com/182992
(cherry picked from commit ae83564cdd1d46c8166df1a95703e8cb1060c0a1)
tegra124: Add more PMC register details.
Reviewed-on: https://chromium-review.googlesource.com/183231
(cherry picked from commit d62ed2c19693284f10c2a12f4295091de3ace829)
tegra124: Add SDRAM configuration header file from cbootimage.
Reviewed-on: https://chromium-review.googlesource.com/182613
(cherry picked from commit 193ed2a104af38f6c41a332a649ce06a3238e0a4)
tegra124: Revise sdram_param.h for Coreboot.
Reviewed-on: https://chromium-review.googlesource.com/182614
(cherry picked from commit 311b0568c5de627435a5b035a7a1e40ecc2672f8)
tegra124: Fix EMC base address.
Reviewed-on: https://chromium-review.googlesource.com/183602
(cherry picked from commit 587c8969292ccecfa29c7720bcf24c704ed4ac4e)
tegra124: Add EMC registers definition.
Reviewed-on: https://chromium-review.googlesource.com/183622
(cherry picked from commit 67a8e5c7e87a1cc6bf006ad806751b549ffd3d5a)
tegra124: Never touch MEM(MC)/EMC clocks in ramstage.
Reviewed-on: https://chromium-review.googlesource.com/183623
(cherry picked from commit 8e3bb34d4ae37feae89b4a39850b2988a334d023)
tegra124: use RAM_CODE[3:2] for ram code
Reviewed-on: https://chromium-review.googlesource.com/183833
(cherry picked from commit 0154239467064ffcbdb82fc4c6b629f5d0c3568d)
tegra124: Allow setting PLLM (clock for SDRAM).
Reviewed-on: https://chromium-review.googlesource.com/183621
(cherry picked from commit a534e5b7c61d655eedd409dbd7780a4f90d40683)
tegra124: SDRAM Initialization.
Reviewed-on: https://chromium-review.googlesource.com/182615
(cherry picked from commit 5a60ae93b0603ee0d4806132be0360f3b1612bce)
tegra124: Get RAM_CODE for SDRAM initialization.
Reviewed-on: https://chromium-review.googlesource.com/183781
(cherry picked from commit a5b7ce70525d7ffef3fac90b8eb14b3f3787f4d8)
Squashed 18 nyan/tegra commits for memory and display.
Change-Id: I59a781ee8dc2fd9c9085373f5a9bb7c8108b094c
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6914
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/soc/nvidia/tegra124/clock.c')
-rw-r--r-- | src/soc/nvidia/tegra124/clock.c | 74 |
1 files changed, 70 insertions, 4 deletions
diff --git a/src/soc/nvidia/tegra124/clock.c b/src/soc/nvidia/tegra124/clock.c index d98da29469..a642a7bcd4 100644 --- a/src/soc/nvidia/tegra124/clock.c +++ b/src/soc/nvidia/tegra124/clock.c @@ -327,6 +327,63 @@ void clock_external_output(int clk_id) } } +/* Start PLLM for SDRAM. */ +void clock_sdram(u32 m, u32 n, u32 p, u32 setup, u32 ph45, u32 ph90, + u32 ph135, u32 kvco, u32 kcp, u32 stable_time, u32 emc_source, + u32 same_freq) +{ + u32 misc1 = ((setup << PLLM_MISC1_SETUP_SHIFT) | + (ph45 << PLLM_MISC1_PD_LSHIFT_PH45_SHIFT) | + (ph90 << PLLM_MISC1_PD_LSHIFT_PH90_SHIFT) | + (ph135 << PLLM_MISC1_PD_LSHIFT_PH135_SHIFT)), + misc2 = ((kvco << PLLM_MISC2_KVCO_SHIFT) | + (kcp << PLLM_MISC2_KCP_SHIFT)), + base; + + if (same_freq) + emc_source |= CLK_SOURCE_EMC_MC_EMC_SAME_FREQ; + else + emc_source &= ~CLK_SOURCE_EMC_MC_EMC_SAME_FREQ; + + /* + * Note PLLM_BASE.PLLM_OUT1_RSTN must be in RESET_ENABLE mode, and + * PLLM_BASE.ENABLE must be in DISABLE state (both are the default + * values after coldboot reset). + */ + + writel(misc1, &clk_rst->pllm_misc1); + writel(misc2, &clk_rst->pllm_misc2); + + /* PLLM.BASE needs BYPASS=0, different from general init_pll */ + base = readl(&clk_rst->pllm_base); + base &= ~(PLLCMX_BASE_DIVN_MASK | PLLCMX_BASE_DIVM_MASK | + PLLM_BASE_DIVP_MASK | PLL_BASE_BYPASS); + base |= ((m << PLL_BASE_DIVM_SHIFT) | (n << PLL_BASE_DIVN_SHIFT) | + (p << PLL_BASE_DIVP_SHIFT)); + writel(base, &clk_rst->pllm_base); + + setbits_le32(&clk_rst->pllm_base, PLL_BASE_ENABLE); + /* stable_time is required, before we can start to check lock. */ + udelay(stable_time); + + while (!(readl(&clk_rst->pllm_base) & PLL_BASE_LOCK)) { + udelay(1); + } + /* + * After PLLM reports being locked, we have to delay 10us before + * enabling PLLM_OUT. + */ + udelay(10); + + /* Put OUT1 out of reset state (start to output). */ + setbits_le32(&clk_rst->pllm_out, PLLM_OUT1_RSTN_RESET_DISABLE); + + /* Enable and start MEM(MC) and EMC. */ + clock_enable_clear_reset(0, CLK_H_MEM | CLK_H_EMC, 0, 0, 0, 0); + writel(emc_source, &clk_rst->clk_src_emc); + udelay(IO_STABILIZATION_DELAY); +} + void clock_cpu0_config_and_reset(void *entry) { void * const evp_cpu_reset = (uint8_t *)TEGRA_EVP_BASE + 0x100; @@ -357,6 +414,7 @@ void clock_cpu0_config_and_reset(void *entry) // Enable other CPU related clocks. setbits_le32(&clk_rst->clk_out_enb_l, CLK_L_CPU); setbits_le32(&clk_rst->clk_out_enb_v, CLK_V_CPUG); + setbits_le32(&clk_rst->clk_out_enb_v, CLK_V_CPULP); // Disable the reset on the non-CPU parts of the fast cluster. write32(CRC_RST_CPUG_CLR_NONCPU, @@ -372,6 +430,15 @@ void clock_cpu0_config_and_reset(void *entry) CRC_RST_CPUG_CLR_CX2 | CRC_RST_CPUG_CLR_CX3 | CRC_RST_CPUG_CLR_L2 | CRC_RST_CPUG_CLR_PDBG, &clk_rst->rst_cpug_cmplx_clr); + + // Disable the reset on the non-CPU parts of the slow cluster. + write32(CRC_RST_CPULP_CLR_NONCPU, + &clk_rst->rst_cpulp_cmplx_clr); + // Disable the various resets on the LP CPU. + write32(CRC_RST_CPULP_CLR_CPU0 | CRC_RST_CPULP_CLR_DBG0 | + CRC_RST_CPULP_CLR_CORE0 | CRC_RST_CPULP_CLR_CX0 | + CRC_RST_CPULP_CLR_L2 | CRC_RST_CPULP_CLR_PDBG, + &clk_rst->rst_cpulp_cmplx_clr); } void clock_halt_avp(void) @@ -401,11 +468,10 @@ void clock_init(void) * features section in the TRM). */ write32(1 << HCLK_DIVISOR_SHIFT | 0 << PCLK_DIVISOR_SHIFT, &clk_rst->clk_sys_rate); /* pclk = hclk = sclk/2 */ - write32(0 << SCLK_DIVIDEND_SHIFT | - (CEIL_DIV(TEGRA_PLLC_KHZ, 300000) - 1) << SCLK_DIVISOR_SHIFT - | SCLK_DIV_ENB, &clk_rst->super_sclk_div); + write32(CLK_DIVIDER(TEGRA_PLLC_KHZ, 300000) << PLL_OUT_RATIO_SHIFT | + PLL_OUT_CLKEN | PLL_OUT_RSTN, &clk_rst->pllc_out); write32(SCLK_SYS_STATE_RUN << SCLK_SYS_STATE_SHIFT | - SCLK_SOURCE_PLLC_OUT0 << SCLK_RUN_SHIFT, + SCLK_SOURCE_PLLC_OUT1 << SCLK_RUN_SHIFT, &clk_rst->sclk_brst_pol); /* sclk = 300 MHz */ /* Change the oscillator drive strength (from U-Boot -- why?) */ |