| Message ID | 20211220193319.114974-3-paul@crapouillou.net (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | clk: ingenic: Add MDMA and BDMA clocks | expand |
Quoting Paul Cercueil (2021-12-20 11:33:19) > The Ingenic JZ4760 and JZ4770 both have an extra DMA core named BDMA > dedicated to the NAND and BCH controller, but which can also do > memory-to-memory transfers. The JZ4760 additionally has a DMA core named > MDMA dedicated to memory-to-memory transfers. The programming manual for > the JZ4770 does have a bit for a MDMA clock, but does not seem to have > the hardware wired in. > > Add the BDMA and MDMA clocks to the JZ4760 CGU code, and the BDMA clock > to the JZ4770 code, so that the BDMA and MDMA controllers can be used. > > Signed-off-by: Paul Cercueil <paul@crapouillou.net> > --- Applied to clk-next
diff --git a/drivers/clk/ingenic/jz4760-cgu.c b/drivers/clk/ingenic/jz4760-cgu.c index 080d492ac95c..8fdd383560fb 100644 --- a/drivers/clk/ingenic/jz4760-cgu.c +++ b/drivers/clk/ingenic/jz4760-cgu.c @@ -313,6 +313,16 @@ static const struct ingenic_cgu_clk_info jz4760_cgu_clocks[] = { .parents = { JZ4760_CLK_H2CLK, }, .gate = { CGU_REG_CLKGR0, 21 }, }, + [JZ4760_CLK_MDMA] = { + "mdma", CGU_CLK_GATE, + .parents = { JZ4760_CLK_HCLK, }, + .gate = { CGU_REG_CLKGR0, 25 }, + }, + [JZ4760_CLK_BDMA] = { + "bdma", CGU_CLK_GATE, + .parents = { JZ4760_CLK_HCLK, }, + .gate = { CGU_REG_CLKGR1, 0 }, + }, [JZ4760_CLK_I2C0] = { "i2c0", CGU_CLK_GATE, .parents = { JZ4760_CLK_EXT, }, diff --git a/drivers/clk/ingenic/jz4770-cgu.c b/drivers/clk/ingenic/jz4770-cgu.c index 8c6c1208f462..7ef91257630e 100644 --- a/drivers/clk/ingenic/jz4770-cgu.c +++ b/drivers/clk/ingenic/jz4770-cgu.c @@ -329,6 +329,11 @@ static const struct ingenic_cgu_clk_info jz4770_cgu_clocks[] = { .parents = { JZ4770_CLK_H2CLK, }, .gate = { CGU_REG_CLKGR0, 21 }, }, + [JZ4770_CLK_BDMA] = { + "bdma", CGU_CLK_GATE, + .parents = { JZ4770_CLK_H2CLK, }, + .gate = { CGU_REG_CLKGR1, 0 }, + }, [JZ4770_CLK_I2C0] = { "i2c0", CGU_CLK_GATE, .parents = { JZ4770_CLK_EXT, },
The Ingenic JZ4760 and JZ4770 both have an extra DMA core named BDMA dedicated to the NAND and BCH controller, but which can also do memory-to-memory transfers. The JZ4760 additionally has a DMA core named MDMA dedicated to memory-to-memory transfers. The programming manual for the JZ4770 does have a bit for a MDMA clock, but does not seem to have the hardware wired in. Add the BDMA and MDMA clocks to the JZ4760 CGU code, and the BDMA clock to the JZ4770 code, so that the BDMA and MDMA controllers can be used. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- Notes: v2: No change v3: Split off dt-bindings include changes to its own patch drivers/clk/ingenic/jz4760-cgu.c | 10 ++++++++++ drivers/clk/ingenic/jz4770-cgu.c | 5 +++++ 2 files changed, 15 insertions(+)