Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [PATCH v2 13/25] mtd: nand: qcom: add QPIC NAND compatible string | From | Archit Taneja <> | Date | Wed, 2 Aug 2017 14:06:18 +0530 |
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On 07/19/2017 05:18 PM, Abhishek Sahu wrote: > The current driver only support EBI2 NAND which uses ADM DMA. The
s/support/supports
> latest QCOM controller supports QPIC NAND which uses BAM DMA. NAND > registers and programming sequence are same for EBI2 and QPIC > NAND so the same driver can support QPIC NAND also by adding the > BAM DMA support. This patch adds the QPIC NAND support in current > NAND driver with compatible string "qcom,qpic-nandc-v1.4.0" and > maps it with different configuration parameter in driver data. >
Reviewed-by: Archit Taneja <architt@codeaurora.org>
> Signed-off-by: Abhishek Sahu <absahu@codeaurora.org> > --- > drivers/mtd/nand/qcom_nandc.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c > index 3b0ae91..6d24630 100644 > --- a/drivers/mtd/nand/qcom_nandc.c > +++ b/drivers/mtd/nand/qcom_nandc.c > @@ -323,9 +323,11 @@ struct qcom_nand_host { > * This data type corresponds to the nand controller properties which varies > * among different NAND controller IP's. > * @ecc_modes - ecc mode for NAND > + * @is_bam - whether NAND controller is using bam > */ > struct qcom_props { > u32 ecc_modes; > + bool is_bam; > }; > > static inline struct qcom_nand_host *to_qcom_nand_host(struct nand_chip *chip) > @@ -2245,6 +2247,12 @@ static int qcom_nandc_remove(struct platform_device *pdev) > > static const struct qcom_props ebi2_nandc_data = { > .ecc_modes = (ECC_RS_4BIT | ECC_BCH_8BIT), > + .is_bam = false, > +}; > + > +static const struct qcom_props qpic_nandc_v1_4_0_data = { > + .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT), > + .is_bam = true, > }; > > /* > @@ -2255,6 +2263,9 @@ static int qcom_nandc_remove(struct platform_device *pdev) > { .compatible = "qcom,ebi2-nandc", > .data = &ebi2_nandc_data, > }, > + { .compatible = "qcom,qpic-nandc-v1.4.0", > + .data = &qpic_nandc_v1_4_0_data, > + }, > {} > }; > MODULE_DEVICE_TABLE(of, qcom_nandc_of_match); >
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