| Message ID | 20210719143811.2135-3-prabhakar.mahadev-lad.rj@bp.renesas.com |
|---|---|
| State | New |
| Headers | show |
| Series | Renesas RZ/G2L CANFD support | expand |
On Mon, 2021-07-19 at 15:38 +0100, Lad Prabhakar wrote: > CANFD block on RZ/G2L SoC is almost identical to one found on > R-Car Gen3 SoC's. On RZ/G2L SoC interrupt sources for each channel > are split into different sources and the IP doesn't divide (1/2) > CANFD clock within the IP. > > This patch adds compatible string for RZ/G2L family and registers > the irq handlers required for CANFD operation. IRQ numbers are now > fetched based on names instead of indices. For backward compatibility > on non RZ/G2L SoC's we fallback reading based on indices. > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> > --- > drivers/net/can/rcar/rcar_canfd.c | 178 ++++++++++++++++++++++++------ > 1 file changed, 147 insertions(+), 31 deletions(-) > > diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c > index 311e6ca3bdc4..d4affc002fb3 100644 > --- a/drivers/net/can/rcar/rcar_canfd.c > +++ b/drivers/net/can/rcar/rcar_canfd.c > @@ -37,9 +37,15 @@ [...] > + if (gpriv->chip_id == RENESAS_RZG2L) { > + gpriv->rstc1 = devm_reset_control_get_exclusive_by_index(&pdev->dev, 0); > + if (IS_ERR(gpriv->rstc1)) { > + dev_err(&pdev->dev, "failed to get reset index 0\n"); Please consider requesting the reset controls by name instead of by index. See also my reply to the binding patch. > + return PTR_ERR(gpriv->rstc1); > + } > + > + err = reset_control_reset(gpriv->rstc1); > + if (err) > + return err; I suggest to wait until after all resource requests have succeeded before triggering the resets, i.e. first get all reset controls and clocks, etc., and only then trigger resets, enable clocks, and so on. That way there will be no spurious resets in case of probe deferrals. regards Philipp
Hi Prabhakar, On Mon, Jul 19, 2021 at 4:39 PM Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote: > CANFD block on RZ/G2L SoC is almost identical to one found on > R-Car Gen3 SoC's. On RZ/G2L SoC interrupt sources for each channel > are split into different sources and the IP doesn't divide (1/2) > CANFD clock within the IP. > > This patch adds compatible string for RZ/G2L family and registers > the irq handlers required for CANFD operation. IRQ numbers are now > fetched based on names instead of indices. For backward compatibility > on non RZ/G2L SoC's we fallback reading based on indices. > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Thanks for your patch! > --- a/drivers/net/can/rcar/rcar_canfd.c > +++ b/drivers/net/can/rcar/rcar_canfd.c > @@ -37,9 +37,15 @@ > #include <linux/bitmap.h> > #include <linux/bitops.h> > #include <linux/iopoll.h> > +#include <linux/reset.h> > > #define RCANFD_DRV_NAME "rcar_canfd" > > +enum rcanfd_chip_id { > + RENESAS_RCAR_GEN3 = 0, > + RENESAS_RZG2L, > +}; > + > /* Global register bits */ > > /* RSCFDnCFDGRMCFG */ > @@ -513,6 +519,9 @@ struct rcar_canfd_global { > enum rcar_canfd_fcanclk fcan; /* CANFD or Ext clock */ > unsigned long channels_mask; /* Enabled channels mask */ > bool fdmode; /* CAN FD or Classical CAN only mode */ > + struct reset_control *rstc1; /* Pointer to reset source1 */ > + struct reset_control *rstc2; /* Pointer to reset source2 */ Are these comments helpful? IMHO they're stating the obvious. > + enum rcanfd_chip_id chip_id; > }; > > /* CAN FD mode nominal rate constants */ > @@ -1577,6 +1586,45 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch, > priv->can.clock.freq = fcan_freq; > dev_info(&pdev->dev, "can_clk rate is %u\n", priv->can.clock.freq); > > + if (gpriv->chip_id == RENESAS_RZG2L) { > + char *irq_name; > + int err_irq; > + int tx_irq; > + > + err_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_error" : "can1_error"); > + if (err_irq < 0) { > + err = err_irq; > + goto fail; > + } > + > + tx_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_tx" : "can1_tx"); > + if (tx_irq < 0) { > + err = tx_irq; > + goto fail; > + } > + > + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, > + "canfd.chnerr%d", ch); if (!irq_name) { ret = -ENOMEM; goto fail; } > + err = devm_request_irq(&pdev->dev, err_irq, > + rcar_canfd_channel_interrupt, 0, > + irq_name, gpriv); > + if (err) { > + dev_err(&pdev->dev, "devm_request_irq CH Err(%d) failed, error %d\n", > + err_irq, err); > + goto fail; > + } > + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, > + "canfd.chntx%d", ch); Likewise. > + err = devm_request_irq(&pdev->dev, tx_irq, > + rcar_canfd_channel_interrupt, 0, > + irq_name, gpriv); > + if (err) { > + dev_err(&pdev->dev, "devm_request_irq Tx (%d) failed, error %d\n", > + tx_irq, err); > + goto fail; > + } > + } > + > if (gpriv->fdmode) { > priv->can.bittiming_const = &rcar_canfd_nom_bittiming_const; > priv->can.data_bittiming_const = > @@ -1649,27 +1700,64 @@ static int rcar_canfd_probe(struct platform_device *pdev) > if (of_child && of_device_is_available(of_child)) > channels_mask |= BIT(1); /* Channel 1 */ > > - ch_irq = platform_get_irq(pdev, 0); > - if (ch_irq < 0) { > - err = ch_irq; > - goto fail_dev; > - } > + if (chip_id == RENESAS_RCAR_GEN3) { > + ch_irq = platform_get_irq_byname(pdev, "ch_int"); platform_get_irq_byname_optional()? Unless you want to urge people to update their DTB. > + if (ch_irq < 0) { > + /* For backward compatibility get irq by index */ > + ch_irq = platform_get_irq(pdev, 0); > + if (ch_irq < 0) > + return ch_irq; > + } > > - g_irq = platform_get_irq(pdev, 1); > - if (g_irq < 0) { > - err = g_irq; > - goto fail_dev; > + g_irq = platform_get_irq_byname(pdev, "g_int"); Likewise, > + if (g_irq < 0) { > + /* For backward compatibility get irq by index */ > + g_irq = platform_get_irq(pdev, 1); > + if (g_irq < 0) > + return g_irq; > + } > + } else { > + g_irq = platform_get_irq_byname(pdev, "g_error"); > + if (g_irq < 0) > + return g_irq; > + > + g_rx_irq = platform_get_irq_byname(pdev, "g_rx_fifo"); > + if (g_rx_irq < 0) > + return g_rx_irq; > } > Gr{oetje,eeting}s, Geert
Hi Philipp, Thank you for the review. On Tue, Jul 20, 2021 at 11:23 AM Philipp Zabel <p.zabel@pengutronix.de> wrote: > > On Mon, 2021-07-19 at 15:38 +0100, Lad Prabhakar wrote: > > CANFD block on RZ/G2L SoC is almost identical to one found on > > R-Car Gen3 SoC's. On RZ/G2L SoC interrupt sources for each channel > > are split into different sources and the IP doesn't divide (1/2) > > CANFD clock within the IP. > > > > This patch adds compatible string for RZ/G2L family and registers > > the irq handlers required for CANFD operation. IRQ numbers are now > > fetched based on names instead of indices. For backward compatibility > > on non RZ/G2L SoC's we fallback reading based on indices. > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > > Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> > > --- > > drivers/net/can/rcar/rcar_canfd.c | 178 ++++++++++++++++++++++++------ > > 1 file changed, 147 insertions(+), 31 deletions(-) > > > > diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c > > index 311e6ca3bdc4..d4affc002fb3 100644 > > --- a/drivers/net/can/rcar/rcar_canfd.c > > +++ b/drivers/net/can/rcar/rcar_canfd.c > > @@ -37,9 +37,15 @@ > [...] > > + if (gpriv->chip_id == RENESAS_RZG2L) { > > + gpriv->rstc1 = devm_reset_control_get_exclusive_by_index(&pdev->dev, 0); > > + if (IS_ERR(gpriv->rstc1)) { > > + dev_err(&pdev->dev, "failed to get reset index 0\n"); > > Please consider requesting the reset controls by name instead of by > index. See also my reply to the binding patch. > Will do. > > + return PTR_ERR(gpriv->rstc1); > > + } > > + > > + err = reset_control_reset(gpriv->rstc1); > > + if (err) > > + return err; > > I suggest to wait until after all resource requests have succeeded > before triggering the resets, i.e. first get all reset controls and > clocks, etc., and only then trigger resets, enable clocks, and so on. > > That way there will be no spurious resets in case of probe deferrals. > Agreed, will update the code. Cheers, Prabhakar > regards > Philipp
Hi Geert, Thank you for the review. On Tue, Jul 20, 2021 at 11:31 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote: > > Hi Prabhakar, > > On Mon, Jul 19, 2021 at 4:39 PM Lad Prabhakar > <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote: > > CANFD block on RZ/G2L SoC is almost identical to one found on > > R-Car Gen3 SoC's. On RZ/G2L SoC interrupt sources for each channel > > are split into different sources and the IP doesn't divide (1/2) > > CANFD clock within the IP. > > > > This patch adds compatible string for RZ/G2L family and registers > > the irq handlers required for CANFD operation. IRQ numbers are now > > fetched based on names instead of indices. For backward compatibility > > on non RZ/G2L SoC's we fallback reading based on indices. > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > > Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> > > Thanks for your patch! > > > --- a/drivers/net/can/rcar/rcar_canfd.c > > +++ b/drivers/net/can/rcar/rcar_canfd.c > > @@ -37,9 +37,15 @@ > > #include <linux/bitmap.h> > > #include <linux/bitops.h> > > #include <linux/iopoll.h> > > +#include <linux/reset.h> > > > > #define RCANFD_DRV_NAME "rcar_canfd" > > > > +enum rcanfd_chip_id { > > + RENESAS_RCAR_GEN3 = 0, > > + RENESAS_RZG2L, > > +}; > > + > > /* Global register bits */ > > > > /* RSCFDnCFDGRMCFG */ > > @@ -513,6 +519,9 @@ struct rcar_canfd_global { > > enum rcar_canfd_fcanclk fcan; /* CANFD or Ext clock */ > > unsigned long channels_mask; /* Enabled channels mask */ > > bool fdmode; /* CAN FD or Classical CAN only mode */ > > + struct reset_control *rstc1; /* Pointer to reset source1 */ > > + struct reset_control *rstc2; /* Pointer to reset source2 */ > > Are these comments helpful? IMHO they're stating the obvious. > No :D will drop those. > > + enum rcanfd_chip_id chip_id; > > }; > > > > /* CAN FD mode nominal rate constants */ > > @@ -1577,6 +1586,45 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch, > > priv->can.clock.freq = fcan_freq; > > dev_info(&pdev->dev, "can_clk rate is %u\n", priv->can.clock.freq); > > > > + if (gpriv->chip_id == RENESAS_RZG2L) { > > + char *irq_name; > > + int err_irq; > > + int tx_irq; > > + > > + err_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_error" : "can1_error"); > > + if (err_irq < 0) { > > + err = err_irq; > > + goto fail; > > + } > > + > > + tx_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_tx" : "can1_tx"); > > + if (tx_irq < 0) { > > + err = tx_irq; > > + goto fail; > > + } > > + > > + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, > > + "canfd.chnerr%d", ch); > > if (!irq_name) { > ret = -ENOMEM; > goto fail; > } > > > + err = devm_request_irq(&pdev->dev, err_irq, > > + rcar_canfd_channel_interrupt, 0, > > + irq_name, gpriv); > > + if (err) { > > + dev_err(&pdev->dev, "devm_request_irq CH Err(%d) failed, error %d\n", > > + err_irq, err); > > + goto fail; > > + } > > + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, > > + "canfd.chntx%d", ch); > > Likewise. > > > + err = devm_request_irq(&pdev->dev, tx_irq, > > + rcar_canfd_channel_interrupt, 0, > > + irq_name, gpriv); > > + if (err) { > > + dev_err(&pdev->dev, "devm_request_irq Tx (%d) failed, error %d\n", > > + tx_irq, err); > > + goto fail; > > + } > > + } > > + > > if (gpriv->fdmode) { > > priv->can.bittiming_const = &rcar_canfd_nom_bittiming_const; > > priv->can.data_bittiming_const = > > > @@ -1649,27 +1700,64 @@ static int rcar_canfd_probe(struct platform_device *pdev) > > if (of_child && of_device_is_available(of_child)) > > channels_mask |= BIT(1); /* Channel 1 */ > > > > - ch_irq = platform_get_irq(pdev, 0); > > - if (ch_irq < 0) { > > - err = ch_irq; > > - goto fail_dev; > > - } > > + if (chip_id == RENESAS_RCAR_GEN3) { > > + ch_irq = platform_get_irq_byname(pdev, "ch_int"); > > platform_get_irq_byname_optional()? > Unless you want to urge people to update their DTB. > Good point will change it to platform_get_irq_byname_optional(). > > + if (ch_irq < 0) { > > + /* For backward compatibility get irq by index */ > > + ch_irq = platform_get_irq(pdev, 0); > > + if (ch_irq < 0) > > + return ch_irq; > > + } > > > > - g_irq = platform_get_irq(pdev, 1); > > - if (g_irq < 0) { > > - err = g_irq; > > - goto fail_dev; > > + g_irq = platform_get_irq_byname(pdev, "g_int"); > > Likewise, > agreed Cheers, Prabhakar > > + if (g_irq < 0) { > > + /* For backward compatibility get irq by index */ > > + g_irq = platform_get_irq(pdev, 1); > > + if (g_irq < 0) > > + return g_irq; > > + } > > + } else { > > + g_irq = platform_get_irq_byname(pdev, "g_error"); > > + if (g_irq < 0) > > + return g_irq; > > + > > + g_rx_irq = platform_get_irq_byname(pdev, "g_rx_fifo"); > > + if (g_rx_irq < 0) > > + return g_rx_irq; > > } > > > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like that. > -- Linus Torvalds
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index 311e6ca3bdc4..d4affc002fb3 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -37,9 +37,15 @@ #include <linux/bitmap.h> #include <linux/bitops.h> #include <linux/iopoll.h> +#include <linux/reset.h> #define RCANFD_DRV_NAME "rcar_canfd" +enum rcanfd_chip_id { + RENESAS_RCAR_GEN3 = 0, + RENESAS_RZG2L, +}; + /* Global register bits */ /* RSCFDnCFDGRMCFG */ @@ -513,6 +519,9 @@ struct rcar_canfd_global { enum rcar_canfd_fcanclk fcan; /* CANFD or Ext clock */ unsigned long channels_mask; /* Enabled channels mask */ bool fdmode; /* CAN FD or Classical CAN only mode */ + struct reset_control *rstc1; /* Pointer to reset source1 */ + struct reset_control *rstc2; /* Pointer to reset source2 */ + enum rcanfd_chip_id chip_id; }; /* CAN FD mode nominal rate constants */ @@ -1577,6 +1586,45 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch, priv->can.clock.freq = fcan_freq; dev_info(&pdev->dev, "can_clk rate is %u\n", priv->can.clock.freq); + if (gpriv->chip_id == RENESAS_RZG2L) { + char *irq_name; + int err_irq; + int tx_irq; + + err_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_error" : "can1_error"); + if (err_irq < 0) { + err = err_irq; + goto fail; + } + + tx_irq = platform_get_irq_byname(pdev, ch == 0 ? "can0_tx" : "can1_tx"); + if (tx_irq < 0) { + err = tx_irq; + goto fail; + } + + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "canfd.chnerr%d", ch); + err = devm_request_irq(&pdev->dev, err_irq, + rcar_canfd_channel_interrupt, 0, + irq_name, gpriv); + if (err) { + dev_err(&pdev->dev, "devm_request_irq CH Err(%d) failed, error %d\n", + err_irq, err); + goto fail; + } + irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, + "canfd.chntx%d", ch); + err = devm_request_irq(&pdev->dev, tx_irq, + rcar_canfd_channel_interrupt, 0, + irq_name, gpriv); + if (err) { + dev_err(&pdev->dev, "devm_request_irq Tx (%d) failed, error %d\n", + tx_irq, err); + goto fail; + } + } + if (gpriv->fdmode) { priv->can.bittiming_const = &rcar_canfd_nom_bittiming_const; priv->can.data_bittiming_const = @@ -1635,8 +1683,11 @@ static int rcar_canfd_probe(struct platform_device *pdev) struct rcar_canfd_global *gpriv; struct device_node *of_child; unsigned long channels_mask = 0; - int err, ch_irq, g_irq; + int err, ch_irq, g_irq, g_rx_irq; bool fdmode = true; /* CAN FD only mode - default */ + enum rcanfd_chip_id chip_id; + + chip_id = (enum rcanfd_chip_id)of_device_get_match_data(&pdev->dev); if (of_property_read_bool(pdev->dev.of_node, "renesas,no-can-fd")) fdmode = false; /* Classical CAN only mode */ @@ -1649,27 +1700,64 @@ static int rcar_canfd_probe(struct platform_device *pdev) if (of_child && of_device_is_available(of_child)) channels_mask |= BIT(1); /* Channel 1 */ - ch_irq = platform_get_irq(pdev, 0); - if (ch_irq < 0) { - err = ch_irq; - goto fail_dev; - } + if (chip_id == RENESAS_RCAR_GEN3) { + ch_irq = platform_get_irq_byname(pdev, "ch_int"); + if (ch_irq < 0) { + /* For backward compatibility get irq by index */ + ch_irq = platform_get_irq(pdev, 0); + if (ch_irq < 0) + return ch_irq; + } - g_irq = platform_get_irq(pdev, 1); - if (g_irq < 0) { - err = g_irq; - goto fail_dev; + g_irq = platform_get_irq_byname(pdev, "g_int"); + if (g_irq < 0) { + /* For backward compatibility get irq by index */ + g_irq = platform_get_irq(pdev, 1); + if (g_irq < 0) + return g_irq; + } + } else { + g_irq = platform_get_irq_byname(pdev, "g_error"); + if (g_irq < 0) + return g_irq; + + g_rx_irq = platform_get_irq_byname(pdev, "g_rx_fifo"); + if (g_rx_irq < 0) + return g_rx_irq; } /* Global controller context */ gpriv = devm_kzalloc(&pdev->dev, sizeof(*gpriv), GFP_KERNEL); - if (!gpriv) { - err = -ENOMEM; - goto fail_dev; - } + if (!gpriv) + return -ENOMEM; + gpriv->pdev = pdev; gpriv->channels_mask = channels_mask; gpriv->fdmode = fdmode; + gpriv->chip_id = chip_id; + + if (gpriv->chip_id == RENESAS_RZG2L) { + gpriv->rstc1 = devm_reset_control_get_exclusive_by_index(&pdev->dev, 0); + if (IS_ERR(gpriv->rstc1)) { + dev_err(&pdev->dev, "failed to get reset index 0\n"); + return PTR_ERR(gpriv->rstc1); + } + + err = reset_control_reset(gpriv->rstc1); + if (err) + return err; + + gpriv->rstc2 = devm_reset_control_get_exclusive_by_index(&pdev->dev, 1); + if (IS_ERR(gpriv->rstc2)) { + dev_err(&pdev->dev, "failed to get reset index 1\n"); + return PTR_ERR(gpriv->rstc2); + } + err = reset_control_reset(gpriv->rstc2); + if (err) { + reset_control_assert(gpriv->rstc1); + return err; + } + } /* Peripheral clock */ gpriv->clkp = devm_clk_get(&pdev->dev, "fck"); @@ -1699,7 +1787,7 @@ static int rcar_canfd_probe(struct platform_device *pdev) } fcan_freq = clk_get_rate(gpriv->can_clk); - if (gpriv->fcan == RCANFD_CANFDCLK) + if (gpriv->fcan == RCANFD_CANFDCLK && gpriv->chip_id == RENESAS_RCAR_GEN3) /* CANFD clock is further divided by (1/2) within the IP */ fcan_freq /= 2; @@ -1711,21 +1799,43 @@ static int rcar_canfd_probe(struct platform_device *pdev) gpriv->base = addr; /* Request IRQ that's common for both channels */ - err = devm_request_irq(&pdev->dev, ch_irq, - rcar_canfd_channel_interrupt, 0, - "canfd.chn", gpriv); - if (err) { - dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", - ch_irq, err); - goto fail_dev; - } - err = devm_request_irq(&pdev->dev, g_irq, - rcar_canfd_global_interrupt, 0, - "canfd.gbl", gpriv); - if (err) { - dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", - g_irq, err); - goto fail_dev; + if (gpriv->chip_id == RENESAS_RCAR_GEN3) { + err = devm_request_irq(&pdev->dev, ch_irq, + rcar_canfd_channel_interrupt, 0, + "canfd.chn", gpriv); + if (err) { + dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", + ch_irq, err); + goto fail_dev; + } + + err = devm_request_irq(&pdev->dev, g_irq, + rcar_canfd_global_interrupt, 0, + "canfd.gbl", gpriv); + if (err) { + dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", + g_irq, err); + goto fail_dev; + } + } else { + err = devm_request_irq(&pdev->dev, g_rx_irq, + rcar_canfd_global_interrupt, 0, + "canfd.gblrx", gpriv); + + if (err) { + dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", + g_rx_irq, err); + goto fail_dev; + } + + err = devm_request_irq(&pdev->dev, g_irq, + rcar_canfd_global_interrupt, 0, + "canfd.gblerr", gpriv); + if (err) { + dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n", + g_irq, err); + goto fail_dev; + } } /* Enable peripheral clock for register access */ @@ -1791,6 +1901,8 @@ static int rcar_canfd_probe(struct platform_device *pdev) fail_clk: clk_disable_unprepare(gpriv->clkp); fail_dev: + reset_control_assert(gpriv->rstc1); + reset_control_assert(gpriv->rstc2); return err; } @@ -1810,6 +1922,9 @@ static int rcar_canfd_remove(struct platform_device *pdev) /* Enter global sleep mode */ rcar_canfd_set_bit(gpriv->base, RCANFD_GCTR, RCANFD_GCTR_GSLPR); clk_disable_unprepare(gpriv->clkp); + reset_control_assert(gpriv->rstc1); + reset_control_assert(gpriv->rstc2); + return 0; } @@ -1827,7 +1942,8 @@ static SIMPLE_DEV_PM_OPS(rcar_canfd_pm_ops, rcar_canfd_suspend, rcar_canfd_resume); static const struct of_device_id rcar_canfd_of_table[] = { - { .compatible = "renesas,rcar-gen3-canfd" }, + { .compatible = "renesas,rcar-gen3-canfd", .data = (void *)RENESAS_RCAR_GEN3 }, + { .compatible = "renesas,rzg2l-canfd", .data = (void *)RENESAS_RZG2L }, { } };