The K210 clock driver depends on SOC_CANAAN, which is only selectable
when !MMU on RISC-V. !MMU is not possible on 32-bit yet, but patches
have been sent for its enabling. The kernel test robot reported this
implicit 64-bit division there.
Replace the implicit division with an explicit one.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-riscv/202301201538.zNlqgE4L-lkp@intel.com/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Link: https://lore.kernel.org/r/20230301002657.352637-2-Mr.Bossman075@gmail.com
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In k210_clk_set_parent(), add missing writel() call to update the mux
register of a clock to change its parent. This also fixes a compilation
warning with clang when compiling with W=1.
Fixes: c6ca7616f7 ("clk: Add RISC-V Canaan Kendryte K210 clock driver")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/20210622064502.14841-1-damien.lemoal@wdc.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add a clock provider driver for the Canaan Kendryte K210 RISC-V SoC.
This new driver with the compatible string "canaan,k210-clk" implements
support for the full clock structure of the K210 SoC. Since it is
required for the correct operation of the SoC, this driver is
selected by default for compilation when the SOC_CANAAN option is
selected.
With this change, the k210-sysctl driver is turned into a simple
platform driver which enables its power bus clock and triggers
populating its child nodes. The sysctl driver retains the SOC early
initialization code, but the implementation now relies on the new
function k210_clk_early_init() provided by the new clk-k210 driver.
The clock structure implemented and many of the coding ideas for the
driver come from the work by Sean Anderson on the K210 support for the
U-Boot project.
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
