On 10/12/20 2:13 PM, Sean Anderson wrote: > This ram bank was previously unusable because PLL1 was not started correctly. > This series fixes that bug, and allows U-Boot to relocate into the AI ram. > This > provides an extra 2M of space in which to load payloads. > > Second time around and I realized that the bypass clock is no longer necessary > (yay). This also necessitates a few more small fixups. I've also added some > minor patches to bring the device tree and clock driver closer to what Linux > has > (or will have). This should be the last round of additions to this series.
I discovered that the clock changes I made cause problems with non-default PLL frequencies (specifically the removal of the bypass clock). I've been working on-and-off on a v3 to fix these problems. --Sean > Changes in v2: > - Don't re-enable the PLL > - Remove bypass clock, which is no longer necessary > - Simplify PLL instantiation > - Modify clock tree so clint is a child of aclk > - Sync memory dts node with Linux > - Use correct aisram clock > > Sean Anderson (16): > clk: k210: Fix PLLs not being enabled > clk: k210: Fix PLL enable always getting taken > clk: k210: Remove bypass clock > clk: k210: Remove k210_register_pll > clk: k210: Move the clint clock to under aclk > clk: Add support for the k210 clock driver pre-relocation > riscv: Enable some devices pre-relocation > lib: fdt: Add fdtdec_setup_mem_size_base_highest > test: Add a test for fdtdec_setup_mem_size_base et al. > ram: Add driver for K210 SRAM > ram: sifive: Default to y only if compiling for fu540 > riscv: Probe ram in dram_init > riscv: Enable AI ram on K210 > riscv: k210: Rename airam to aisram > riscv: k210: Use AI as the parent clock of aisram, not PLL1 > riscv: Don't reserve AI ram in k210 dts > > MAINTAINERS | 1 + > arch/riscv/cpu/generic/dram.c | 26 +++ > arch/riscv/dts/k210.dtsi | 22 +-- > arch/sandbox/dts/test.dts | 12 ++ > board/sipeed/maix/Kconfig | 2 + > board/sipeed/maix/maix.c | 26 --- > configs/sandbox64_defconfig | 2 +- > configs/sandbox_defconfig | 2 +- > configs/sandbox_flattree_defconfig | 2 +- > configs/sipeed_maix_bitm_defconfig | 1 + > drivers/clk/kendryte/Makefile | 2 +- > drivers/clk/kendryte/bypass.c | 273 ----------------------------- > drivers/clk/kendryte/clk.c | 61 +++---- > drivers/clk/kendryte/pll.c | 26 +-- > drivers/ram/Kconfig | 7 + > drivers/ram/Makefile | 1 + > drivers/ram/kendryte.c | 56 ++++++ > drivers/ram/sifive/Kconfig | 2 +- > include/configs/sipeed-maix.h | 4 - > include/fdtdec.h | 19 +- > include/kendryte/bypass.h | 31 ---- > include/kendryte/pll.h | 4 - > lib/fdtdec.c | 34 +++- > test/dm/fdtdec.c | 38 ++++ > 24 files changed, 230 insertions(+), 424 deletions(-) > delete mode 100644 drivers/clk/kendryte/bypass.c > create mode 100644 drivers/ram/kendryte.c > delete mode 100644 include/kendryte/bypass.h >
