diff options
| author | Biju Das <biju.das.jz@bp.renesas.com> | 2025-11-29 16:43:09 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-17 15:07:07 +0100 |
| commit | 83c405ec3a340a334c46bb59b07e5799f6d205a4 (patch) | |
| tree | f2126e79ac8932696f1433bcccb0edb6cf18c8fe /drivers/tty | |
| parent | 4cb2bd1bf41a0d6dbe1fc4bf8d8f83f40b914572 (diff) | |
serial: sh-sci: Add support for RZ/G3E RSCI clks
RZ/G3E RSCI has 6 clocks (5 module clocks + 1 external clock). Add
support for the module clocks.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://patch.msgid.link/20251129164325.209213-14-biju.das.jz@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/sh-sci-common.h | 3 | ||||
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 10 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/tty/serial/sh-sci-common.h b/drivers/tty/serial/sh-sci-common.h index abcd5bcc7c36..5d30771278b4 100644 --- a/drivers/tty/serial/sh-sci-common.h +++ b/drivers/tty/serial/sh-sci-common.h @@ -16,6 +16,9 @@ enum SCI_CLKS { SCI_SCK, /* Optional External Clock */ SCI_BRG_INT, /* Optional BRG Internal Clock Source */ SCI_SCIF_CLK, /* Optional BRG External Clock Source */ + SCI_FCK_DIV4, /* Optional Functional Clock frequency-divided by 4 */ + SCI_FCK_DIV16, /* Optional Functional Clock frequency-divided by 16 */ + SCI_FCK_DIV64, /* Optional Functional Clock frequency-divided by 64 */ SCI_NUM_CLKS }; diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index a63370f22574..5d7e78f95c70 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -3172,6 +3172,9 @@ static int sci_init_clocks(struct sci_port *sci_port, struct device *dev) [SCI_SCK] = "sck", [SCI_BRG_INT] = "brg_int", [SCI_SCIF_CLK] = "scif_clk", + [SCI_FCK_DIV4] = "tclk_div4", + [SCI_FCK_DIV16] = "tclk_div16", + [SCI_FCK_DIV64] = "tclk_div64", }; struct clk *clk; unsigned int i; @@ -3181,6 +3184,9 @@ static int sci_init_clocks(struct sci_port *sci_port, struct device *dev) } else if (sci_port->type == RSCI_PORT_SCIF16) { clk_names[SCI_FCK] = "operation"; clk_names[SCI_BRG_INT] = "bus"; + } else if (sci_port->type == RSCI_PORT_SCIF32) { + clk_names[SCI_FCK] = "tclk"; + clk_names[SCI_BRG_INT] = "pclk"; } for (i = 0; i < SCI_NUM_CLKS; i++) { @@ -3194,6 +3200,10 @@ static int sci_init_clocks(struct sci_port *sci_port, struct device *dev) (i == SCI_FCK || i == SCI_BRG_INT)) return dev_err_probe(dev, -ENODEV, "failed to get %s\n", name); + if (!clk && sci_port->type == RSCI_PORT_SCIF32 && + (i != SCI_SCK && i != SCI_SCIF_CLK)) + return dev_err_probe(dev, -ENODEV, "failed to get %s\n", name); + if (!clk && i == SCI_FCK) { /* * Not all SH platforms declare a clock lookup entry |